But the open pastureland around their cities may not be sold, for this is their permanent possession.

Leviticus 25:33
So whatever belongs to the Levites may be redeemed--a house sold in a city they possess--and must be released in the Jubilee, because the houses in the cities of the Levites are their possession among the Israelites.

Numbers 35:2
"Command the Israelites to give, from the inheritance they will possess, cities for the Levites to live in and pasturelands around the cities.

2 Chronicles 31:19
As for the priests, the descendants of Aaron, who lived on the farmlands around each of their cities or in any other city, men were designated by name to distribute a portion to every male among the priests and to every Levite listed by the genealogies.

But the field of the suburbs of their cities may not be sold; for it is their perpetual possession.