elasar
2 occurrences across the corpus
Sefer haYashar (Book of Jasher)
And Nimrod fled and returned in shame and disgrace to his land, and he was under subjection to Chedorlaomer for a long time, and Chedorlaomer returned to his land and sent princes of his host to the kings that dwelt around him, to Arioch king of Elasar, and to Tidal king of Goyim, and made a covenant with them, and they were all obedient to his commands.
At that time Chedorlaomer king of Elam sent to all the neighboring kings, to Nimrod, king of Shinar who was then under his power, and to Tidal, king of Goyim, and to Arioch, king of Elasar, with whom he made a covenant, saying, Come up to me and assist me, that we may smite all the towns of Sodom and its inhabitants, for they have rebelled against me these thirteen years.