27 occurrences across the corpus

The Mishnah

Mishnah Sheviit 1:4

If one of the trees was capable of bearing a cake of dried figs [weighing sixty manehs], and the other two unable; or, if two could do so, but one cannot, then they may plow them only for their own needs. [This is the rule if the number of trees is] from three to nine, but if there were ten trees or more, whether they produce [the requisite amount of fruit or not] the whole bet seah may be plowed on their account. As it says: “In plowing and in harvesting, you shall rest” (Ex 34:21). It was unnecessary to state plowing and harvesting in the seventh year, rather [what it means is] the plowing of the year preceding which encroaches on the sabbatical year, and the harvest of the seventh year which extends into the year after. Rabbi Ishmael says: just as plowing is an optional act, so harvesting [referred to in the verse] is optional, thus excluding the harvesting of the omer [which is obligatory].

Mishnah Sheviit 1:4

If one of the trees was capable of bearing a cake of dried figs [weighing sixty manehs], and the other two unable; or, if two could do so, but one cannot, then they may plow them only for their own needs. [This is the rule if the number of trees is] from three to nine, but if there were ten trees or more, whether they produce [the requisite amount of fruit or not] the whole bet seah may be plowed on their account. As it says: “In plowing and in harvesting, you shall rest” (Ex 34:21). It was unnecessary to state plowing and harvesting in the seventh year, rather [what it means is] the plowing of the year preceding which encroaches on the sabbatical year, and the harvest of the seventh year which extends into the year after. Rabbi Ishmael says: just as plowing is an optional act, so harvesting [referred to in the verse] is optional, thus excluding the harvesting of the omer [which is obligatory].

Mishnah Beitzah 5:2

Every [act] for which one is liable on Shabbat because of mandated rest [shevut], [or] because it is only optional [reshut], [or] even though it is a religious act [mitzvah], he is also liable on Yom Tov. For the following acts he is liable because of shevut: One may not climb a tree, And one may not ride on an animal. And one may not swim in water. And one may not clap hands, nor slap [thighs], nor dance. For the following acts he is liable because they are only optional: One may not judge; And one may not betroth a wife, nor perform halizah, nor perform yibbum [consummate a levirate marriage]. And for the following acts one is liable even though it is a religious act [mitzvah]: One may not dedicate [anything to the Temple], nor vow a personal valuation, nor make a vow of herem, nor set aside terumah or tithes. All these things they [the rabbis said that they are forbidden] on Yom Tov, how much more so [are they forbidden] on Shabbat. There is no difference between Yom Tov and Shabbat except for the preparation of food alone.

Mishnah Beitzah 5:2

Every [act] for which one is liable on Shabbat because of mandated rest [shevut], [or] because it is only optional [reshut], [or] even though it is a religious act [mitzvah], he is also liable on Yom Tov. For the following acts he is liable because of shevut: One may not climb a tree, And one may not ride on an animal. And one may not swim in water. And one may not clap hands, nor slap [thighs], nor dance. For the following acts he is liable because they are only optional: One may not judge; And one may not betroth a wife, nor perform halizah, nor perform yibbum [consummate a levirate marriage]. And for the following acts one is liable even though it is a religious act [mitzvah]: One may not dedicate [anything to the Temple], nor vow a personal valuation, nor make a vow of herem, nor set aside terumah or tithes. All these things they [the rabbis said that they are forbidden] on Yom Tov, how much more so [are they forbidden] on Shabbat. There is no difference between Yom Tov and Shabbat except for the preparation of food alone.

Mishnah Makkot 2:2

If a man threw a stone into the public domain and killed a person, he goes into banishment. Rabbi Eliezer ben Jacob says: “If after the stone had left his hand another person put out his head and caught it, the thrower is exempt [from banishment].” If a man threw a stone into his [own] court and killed a person, then, if the victim had a right of entry there, the thrower goes into banishment, and if not, he does not go into banishment, as it says, “As when a man goes into the forest with his neighbor” (Deut. 19:5): the forest is a domain accessible to the victim and to the slayer and it therefore excludes the court of the householder where the victim has no right of entry. Abba Shaul says: “Hewing of wood is an optional act and it therefore excludes a father beating his son, or a master disciplining his pupil, or an agent of the court [administering lashes].”

Mishnah Shevuot 3:6

If he swore to annul a commandment, and did not annul it, he is exempt. [If he swore] to fulfill [a commandment], and did not fulfill it, he is exempt. For it would have been logical [in the second instance] that he should have been liable, as is the opinion of Rabbi Judah ben Bathyra. [For] Rabbi Judah ben Bathyra said, “Now, if for [swearing with regards to] an optional matter, for which he is not adjured from Mount Sinai, he is liable [should he not fulfill his oath], for [swearing with regards to] a commandment, for which he is adjured from Mount Sinai, he should most certainly be liable [should he not fulfill his oath]! They said to him: “No! If you say that for an oath with regards to an optional matter [he is liable], it is because [Scripture] has in that case made negative equal to positive [for liability]; But how can you say that for an oath [to fulfill] a commandment [he is liable], since [Scripture] has not in that case made negative equal to positive, for if he swore to annul [a commandment], and did not annul it, he is exempt!

Mishnah Shevuot 3:6

If he swore to annul a commandment, and did not annul it, he is exempt. [If he swore] to fulfill [a commandment], and did not fulfill it, he is exempt. For it would have been logical [in the second instance] that he should have been liable, as is the opinion of Rabbi Judah ben Bathyra. [For] Rabbi Judah ben Bathyra said, “Now, if for [swearing with regards to] an optional matter, for which he is not adjured from Mount Sinai, he is liable [should he not fulfill his oath], for [swearing with regards to] a commandment, for which he is adjured from Mount Sinai, he should most certainly be liable [should he not fulfill his oath]! They said to him: “No! If you say that for an oath with regards to an optional matter [he is liable], it is because [Scripture] has in that case made negative equal to positive [for liability]; But how can you say that for an oath [to fulfill] a commandment [he is liable], since [Scripture] has not in that case made negative equal to positive, for if he swore to annul [a commandment], and did not annul it, he is exempt!

The Jerusalem Talmud

Jerusalem Talmud Pesachim 6:21

HALAKHAH: What does Sabbath rest mean? Did we not state, “One who desecrates sancta, or abases the holidays, or breaks the Covenant of our father Abraham, or is insolent against the Torah, even if in his hands are learning and good deeds, has no part in the Future World.” Rebbi Jeremiah said, what is optional? If he wants he cooks, if he does not want he does not cook.

Jerusalem Talmud Sukkah 2:24

HALAKHAH: What is Rebbi Eliezer’s reason? It says here, you shall sit, and it says there, at the door of the Tent of Meeting they shall sit day and night. Since for the sitting mentioned there He made nights like days, so also for the sitting mentioned here we shall make nights like days. Rebbi Joḥanan in the name of Rebbi Ismael: It is said fifteenth for Passover and it is said fifteenth for Tabernacles. Since for fifteenth said for Passover the first night is obligatory and the remaining days are optional, so also for fifteenth said for Tabernacles the first night is obligatory and the remaining days are optional. The colleagues asked, since there only that one comes to eat mazzah with an appetite, so also here only they come to eat in the sukkah with appetite? Rebbi Ze`ira asked: Since there only one has to eat mazzah in the volume of an olive, so also here only one has to eat grain [in the sukkah] in the volume of an olive? Rebbi Hoshaia said, the sukkah is obligatory all seven days. Rebbi Berekhiah said, they disagree. Rebbi Abuna said, they do not disagree. What Rebbi Joḥanan said, if he put his mind to it; what Rebbi Hoshaia said, if he did not put his mind to it.

Jerusalem Talmud Sukkah 2:24

HALAKHAH: What is Rebbi Eliezer’s reason? It says here, you shall sit, and it says there, at the door of the Tent of Meeting they shall sit day and night. Since for the sitting mentioned there He made nights like days, so also for the sitting mentioned here we shall make nights like days. Rebbi Joḥanan in the name of Rebbi Ismael: It is said fifteenth for Passover and it is said fifteenth for Tabernacles. Since for fifteenth said for Passover the first night is obligatory and the remaining days are optional, so also for fifteenth said for Tabernacles the first night is obligatory and the remaining days are optional. The colleagues asked, since there only that one comes to eat mazzah with an appetite, so also here only they come to eat in the sukkah with appetite? Rebbi Ze`ira asked: Since there only one has to eat mazzah in the volume of an olive, so also here only one has to eat grain [in the sukkah] in the volume of an olive? Rebbi Hoshaia said, the sukkah is obligatory all seven days. Rebbi Berekhiah said, they disagree. Rebbi Abuna said, they do not disagree. What Rebbi Joḥanan said, if he put his mind to it; what Rebbi Hoshaia said, if he did not put his mind to it.

Jerusalem Talmud Sotah 1:3

The declaration of jealousy, Rebbi Joshua said in the name of Rebbi Eliezer, is obligatory; but Rebbi Joshua said, it is optional. Rebbi Eleazar ben Rebbi Yose said before Rebbi Yasa, it turns out that Rebbi Eliezer follows the House of Shammai and Rebbi Joshua the House of Hillel. As the House of Shammai say, a man may not divorce his wife except if he found in her a matter of nakedness. If he found her behavior ugly, he cannot divorce her since he found no proof of adultery; he cannot keep her since he found her behavior ugly. Therefore, he says, it is obligatory. But was it not stated in the name of the House of Shammai: Not only that the woman must leave because of incest; from where that she must leave if her head’s [hair] is loose, if the side seams of her dress are open, or her arms stripped bare? The verse says, “for he found in her a matter of nakedness.” Rebbi Mana said, I confirmed this if there are witnesses, but not if there are no witnesses.

Jerusalem Talmud Sotah 1:4

“And Rebbi Joshua [follows] the House of Hillel.” For the House of Hillel say, even if she burned his food. Therefore, he says it is optional. If he wants to declare his jealousy, he declares his jealousy; if he wants to divorce her, he divorces her.

Jerusalem Talmud Shevuot 3:24

HALAKHAH: He wants to teach himself a pretext. “Whether matters of himself,” etc. Rebbi Abba in the name of Samuel: “An oath that X gave a mina to Y,” and it turns out that he did not give, since it was not in his power for the future, it is not in his power for the past. Rebbi Yose objected, about phylacteries there is nothing about the future but there is about the past! He told him, phylacteries came from another source. To cause evil or cause good; just as doing good is optional so doing bad is optional; this excludes anything involving a prohibition or anything involving a permission. Anything which one will blurt out, excluding a minor. A person in an oath, excluding a person not acting at his own will. And it will be forgotten by him, he will be oblivious of the oath. Or could I think that the object was forgotten by him? The verse says, in an oath and it was forgotten by him; he is liable for forgetting the oath; he is not liable for forgetting the object. Could one not add forgetting the object to forgetting the oath so that he should be liable? What is the difference between this and forgetting impurity and forgetting the Sanctuary so that he should be liable twice following Rebbi Ismael, who said forgetting impurity and forgetting the Sanctuary? There it is written it was forgotten by him, it was forgotten by him twice. Here it is written it was forgotten by him once. I could think that one who swears to the detriment of others should be liable: the verse says, to cause evil or cause good; just as doing good is optional so doing bad is optional. I shall exclude one who swears to the detriment of another that he should not be liable. For example, if one swears that he will not provide food for another. He saw him in convulsions and gave to him.

Jerusalem Talmud Shevuot 3:24

HALAKHAH: He wants to teach himself a pretext. “Whether matters of himself,” etc. Rebbi Abba in the name of Samuel: “An oath that X gave a mina to Y,” and it turns out that he did not give, since it was not in his power for the future, it is not in his power for the past. Rebbi Yose objected, about phylacteries there is nothing about the future but there is about the past! He told him, phylacteries came from another source. To cause evil or cause good; just as doing good is optional so doing bad is optional; this excludes anything involving a prohibition or anything involving a permission. Anything which one will blurt out, excluding a minor. A person in an oath, excluding a person not acting at his own will. And it will be forgotten by him, he will be oblivious of the oath. Or could I think that the object was forgotten by him? The verse says, in an oath and it was forgotten by him; he is liable for forgetting the oath; he is not liable for forgetting the object. Could one not add forgetting the object to forgetting the oath so that he should be liable? What is the difference between this and forgetting impurity and forgetting the Sanctuary so that he should be liable twice following Rebbi Ismael, who said forgetting impurity and forgetting the Sanctuary? There it is written it was forgotten by him, it was forgotten by him twice. Here it is written it was forgotten by him once. I could think that one who swears to the detriment of others should be liable: the verse says, to cause evil or cause good; just as doing good is optional so doing bad is optional. I shall exclude one who swears to the detriment of another that he should not be liable. For example, if one swears that he will not provide food for another. He saw him in convulsions and gave to him.

Jerusalem Talmud Shevuot 3:24

HALAKHAH: He wants to teach himself a pretext. “Whether matters of himself,” etc. Rebbi Abba in the name of Samuel: “An oath that X gave a mina to Y,” and it turns out that he did not give, since it was not in his power for the future, it is not in his power for the past. Rebbi Yose objected, about phylacteries there is nothing about the future but there is about the past! He told him, phylacteries came from another source. To cause evil or cause good; just as doing good is optional so doing bad is optional; this excludes anything involving a prohibition or anything involving a permission. Anything which one will blurt out, excluding a minor. A person in an oath, excluding a person not acting at his own will. And it will be forgotten by him, he will be oblivious of the oath. Or could I think that the object was forgotten by him? The verse says, in an oath and it was forgotten by him; he is liable for forgetting the oath; he is not liable for forgetting the object. Could one not add forgetting the object to forgetting the oath so that he should be liable? What is the difference between this and forgetting impurity and forgetting the Sanctuary so that he should be liable twice following Rebbi Ismael, who said forgetting impurity and forgetting the Sanctuary? There it is written it was forgotten by him, it was forgotten by him twice. Here it is written it was forgotten by him once. I could think that one who swears to the detriment of others should be liable: the verse says, to cause evil or cause good; just as doing good is optional so doing bad is optional. I shall exclude one who swears to the detriment of another that he should not be liable. For example, if one swears that he will not provide food for another. He saw him in convulsions and gave to him.

Jerusalem Talmud Shevuot 3:24

HALAKHAH: He wants to teach himself a pretext. “Whether matters of himself,” etc. Rebbi Abba in the name of Samuel: “An oath that X gave a mina to Y,” and it turns out that he did not give, since it was not in his power for the future, it is not in his power for the past. Rebbi Yose objected, about phylacteries there is nothing about the future but there is about the past! He told him, phylacteries came from another source. To cause evil or cause good; just as doing good is optional so doing bad is optional; this excludes anything involving a prohibition or anything involving a permission. Anything which one will blurt out, excluding a minor. A person in an oath, excluding a person not acting at his own will. And it will be forgotten by him, he will be oblivious of the oath. Or could I think that the object was forgotten by him? The verse says, in an oath and it was forgotten by him; he is liable for forgetting the oath; he is not liable for forgetting the object. Could one not add forgetting the object to forgetting the oath so that he should be liable? What is the difference between this and forgetting impurity and forgetting the Sanctuary so that he should be liable twice following Rebbi Ismael, who said forgetting impurity and forgetting the Sanctuary? There it is written it was forgotten by him, it was forgotten by him twice. Here it is written it was forgotten by him once. I could think that one who swears to the detriment of others should be liable: the verse says, to cause evil or cause good; just as doing good is optional so doing bad is optional. I shall exclude one who swears to the detriment of another that he should not be liable. For example, if one swears that he will not provide food for another. He saw him in convulsions and gave to him.

The Babylonian Talmud

Babylonian Talmud Sukkah 2:141

R. Yohanan answered in the name of R. Shimon b. Yehozadak: It was stated with regard to Sukkot, "The fifteenth," and it was stated with regard to the Festival of Matzot, "The fifteenth." Just as there the first night only is obligatory but from then on it is optional, so too here the first night is obligatory, but from then on it is optional. And from where do we know [that the first night of Pesah it is obligatory to eat matzah]?

Babylonian Talmud Sukkah 2:141

R. Yohanan answered in the name of R. Shimon b. Yehozadak: It was stated with regard to Sukkot, "The fifteenth," and it was stated with regard to the Festival of Matzot, "The fifteenth." Just as there the first night only is obligatory but from then on it is optional, so too here the first night is obligatory, but from then on it is optional. And from where do we know [that the first night of Pesah it is obligatory to eat matzah]?

Babylonian Talmud Makkot 2:27

Abba Shaul says: Just as cutting wood is optional [for someone and therefore he should not be punished], so too, anything that is optional [should not receive punishment] except the father who strikes his son, the teacher who rebukes his student [through beating], and the messenger of the court [who gives punishments through lashings].

Babylonian Talmud Makkot 2:27

Abba Shaul says: Just as cutting wood is optional [for someone and therefore he should not be punished], so too, anything that is optional [should not receive punishment] except the father who strikes his son, the teacher who rebukes his student [through beating], and the messenger of the court [who gives punishments through lashings].

Babylonian Talmud Makkot 2:34

The one who throws the stone, etc. One of the rabbis said to Rava: From what [basis are we stating the case] that he is cutting wood because it is optional? Perhaps he is cutting wood because [it is for a] sukkah or cutting wood [for the altar] (which would be a requirement and not an option), and even this, Scripture said, he should be exiled [for doing something required]?! He (Rava) said to him: since he found it cut and he does not cut [it himself], it is not a mitzvah, also now [regarding cutting wood] is not a mitzvah.

Babylonian Talmud Makkot 2:36

Rava returned and said: "I said nothing! [This is what I should have said:] 'When he comes with his friend into a forest' (Deuteronomy 19:5). What [does it mean] 'forest'? If he goes or if he didn't go [i.e. it's an optional act]. And if you were to think it were a mitzvah, could he be sufficient [in meeting his obligation] if he didn't go?"

Babylonian Talmud Makkot 2:37

Rav Ada bar Ahavah said to Rava: "Is every case where it's written 'when (asher)' an optional action? From this [reasoning], 'When (asher) anyone has become impure fails to purify himself [they will be cut off from their people]' (Numbers 19:20)—if he wants to [touch a corpse], he can be impure, and if he doesn't want to he isn't impure; and a mitzvah corpse (of an unknown stranger) where it is not possible that [the finder] would become impure—would he be exempt [from the penalty of entering the Sanctuary while impure]?"

Babylonian Talmud Makkot 2:39

'He shall be impure' (Numbers 19:13)—[i.e.] in any case." [Hence in the case of the corpse impurity it is not optional like the chopping wood case].

Babylonian Talmud Makkot 2:42

Rabbi Yishmael says (his response because he sees the verse as referring to Shabbat): Just as plowing is optional (not a Mitzvah) so too reaping is optional (i.e. these acts are only forbidden on Shabbat if they are done voluntarily as opposed to for Mitzvah reasons). It excludes the reaping for the omer (offering) as it is a Mitzvah.

Babylonian Talmud Makkot 2:42

Rabbi Yishmael says (his response because he sees the verse as referring to Shabbat): Just as plowing is optional (not a Mitzvah) so too reaping is optional (i.e. these acts are only forbidden on Shabbat if they are done voluntarily as opposed to for Mitzvah reasons). It excludes the reaping for the omer (offering) as it is a Mitzvah.

Babylonian Talmud Makkot 3:101

Rather [when Rebbi Yochanon said] this and one other case, he was referring to [Pe'uh], but not oniess. Because where do we say that a vow made on public consent cannot be annulled? For an optional matter. But [a vow] related to performing a mitzvah is subject to annulment.