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 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.