Numbers 35:2-5

2“Command the Israelites to give, from the inheritance they will possess, cities for the Levites to live in and pasturelands around the cities. 3The cities will be for them to live in, and the pasturelands will be for their herds, their flocks, and all their other livestock.

4The pasturelands around the cities you are to give the Levites will extend a thousand cubits1 from the wall on every side. 5You are also to measure two thousand cubits2 outside the city on the east, two thousand on the south, two thousand on the west, and two thousand on the north, with the city in the center. These areas will serve as larger pasturelands for the cities.