assi

Rebbi Assi said in the name of Rebbi Yochanon From when does one become liable [for eating unredeemed] maaser sheni]? From when it sees the face of the wall. What is the reason? That the Torah says (Deuteronomy 12,18) "Before Hashem your God you should eat" And it's written, (Deuteronomy 12,17) "You may not proceed to eat in your gates", we derive that anywhere where we can read "Before Hashem your God you should eat" [i.e. where it entered Jerusalem] we also read "You may not proceed to eat in your gates" and anywhere where we can not read "Before Hashem your God you should eat" [i.e. where it never entered Jerusalem] we also do not read "You may not proceed to eat in your gates".