Numbers 33:54

33:54 You must divide the land by lot for an inheritance among your families. To a larger group you must give a larger inheritance, and to a smaller group you must give a smaller inheritance. Everyone’s inheritance must be in the place where his lot falls. You must inherit according to your ancestral tribes.

Numbers 34:13

34:13 Then Moses commanded the Israelites: “This is the land which you will inherit by lot, which the Lord has commanded to be given to the nine and a half tribes,