Numbers 32:1
The Petition of the Reubenites and Gadites
32:1 Now the Reubenites and the Gadites possessed a very large number of cattle. When they saw that the lands of Jazer and Gilead were ideal for cattle,
Numbers 35:3-4
35:3 Thus they will have towns in which to live, and their grazing lands will be for their cattle, for their possessions, and for all their animals.
35:4 The grazing lands around the towns that you will give to the Levites must extend to a distance of 500 yards from the town wall.
Numbers 35:7
35:7 “So the total of the towns you will give the Levites is forty-eight. You must give these together with their grazing lands.