Deuteronomy 29:8

29:8 Then we took their land and gave it as an inheritance to Reuben, Gad, and half the tribe of Manasseh.

Deuteronomy 3:12

Distribution of the Transjordanian Allotments

3:12 This is the land we brought under our control at that time: The territory extending from Aroer by the Wadi Arnon and half the Gilead hill country with its cities I gave to the Reubenites and Gadites.

Deuteronomy 3:16

3:16 To the Reubenites and Gadites I allocated the territory extending from Gilead as far as Wadi Arnon (the exact middle of the wadi was a boundary) all the way to the Wadi Jabbok, the Ammonite border.

Deuteronomy 4:43

4:43 These cities are Bezer, in the desert plateau, for the Reubenites; Ramoth in Gilead for the Gadites; and Golan in Bashan for the Manassehites.