Deuteronomy 4:41-43
The Narrative Concerning Cities of Refuge
4:41 Then Moses selected three cities in the Transjordan, toward the east.
4:42 Anyone who accidentally killed someone without hating him at the time of the accident could flee to one of those cities and be safe.
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.