Deuteronomy 3:12-13

“When we took possession of this land at that time, I gave to the Reubenites and the Gadites the territory beginning at Aroer, which is on the edge of the Valley of the Arnon, and half the hill country of Gilead with its cities. The rest of Gilead, and all Bashan, the kingdom of Og, that is, all the region of Argob, I gave to the half-tribe of Manasseh. (All that portion of Bashan is called the land of Rephaim.