Numbers 35:2-5

2The Lord said, ‘Tell the people this. They must give some of their land to the Levites. Then the Levites can build towns to live in. They will also have the land round the towns for their animals.

3The Levites must have towns to live in and land for their cows and all their animals.

4The fields that you give to them for their animals must reach 500 metres from the walls of each town.

5You must also measure 1,000 metres outside the town on each side, the east side, the south side, the west side and the north side. So the town will be in the centre. Those fields of grass will belong to them for each of their towns.