Numbers 35:1-35:8

The Lord spoke to Moses in the steppes of Moab at the Jordan near Jericho, saying: Instruct the Israelite people to assign, out of the holdings apportioned to them, towns for the Levites to dwell in; you shall also assign to the Levites pasture land around their towns. The towns shall be theirs to dwell in, and the pasture shall be for the cattle they own and all their other beasts. The town pasture that you are to assign to the Levites shall extend a thousand cubits outside the town wall all around. You shall measure off two thousand cubits outside the town on the east side, two thousand on the south side, two thousand on the west side, and two thousand on the north side, with the town in the center. That shall be the pasture for their towns. The towns that you assign to the Levites shall comprise the six cities of refuge that you are to designate for a manslayer to flee to, to which you shall add forty-two towns. Thus the total of the towns that you assign to the Levites shall be forty-eight towns, with their pasture. In assigning towns from the holdings of the Israelites, take more from the larger groups and less from the smaller, so that each assigns towns to the Levites in proportion to the share it receives.