Numbers 35:1

1 And the Lord said to Moses in the lowlands of Moab by Jordan at Jericho,

2 Give orders to the children of Israel to give to the Levites, from the heritage which is theirs, towns for themselves, with land on the outskirts of the towns.

3 These towns are to be their living-places, with land round them for their cattle and their food and all their beasts,

4 Stretching from the wall of the towns a distance of a thousand cubits all round.

5 The measure of this space of land is to be two thousand cubits outside the town on the east, and two thousand cubits on the south and on the west and on the north, the town being in the middle. This space will be the outskirts of their towns.

6 And the towns which you give the Levites are to be the six safe places to which the taker of life may go in flight; and in addition you are to give them forty-two towns.

7 Forty-eight towns are to be given to the Levites, all with land round them.