Numbers 35:4

The pasturelands of the cities , which you shall give to the Levites , shall reach from the wall of the city outward a thousand cubits all around .

“The pasturelands around the towns that you give the Levites will extend a thousand cubits from the town wall.

And the suburbs of the cities, which ye shall give unto the Levites, shall reach from the wall of the city and outward a thousand cubits round about.