Numbers 35:2-5

2“Command the sons of Israel that they give to the Levites from the inheritance of their possession cities to live in; and you shall give to the Levites pasture lands around the cities. 3The cities shall be theirs to live in; and their pasture lands shall be for their cattle and for their equipment and for all their other animals.

4“The pasture lands of the cities which you are to give to the Levites shall extend from the wall of the city 1outward a thousand cubits around. 5You shall also measure outside the city on the east side two thousand cubits, on the south side two thousand cubits, on the west side two thousand cubits, and on the north side two thousand cubits, with the city in the center. This shall become theirs as pasture lands for the cities.