Leviticus 25:29-34
29‘Likewise, if a man sells a house for habitation in a walled city, then his redemption right remains valid until a full year from its sale; his right of redemption lasts a full year. 30‘But if it is not redeemed for him within the space of a full year, then the house that is in the walled city passes permanently to its purchaser throughout his generations; it does not 1revert in the jubilee. 31‘The houses of the villages, however, which have no surrounding wall, shall be considered 1as open fields; they have redemption rights and 2revert in the jubilee. 32‘As for acities of the Levites, the Levites have a permanent right of redemption for the houses of the cities which are their possession. 33‘What, therefore, 1belongs to the Levites may be redeemed, and a house sale 2in the city of 3their possession 4reverts in the jubilee, for the houses of the cities of the Levites are their possession among the sons of Israel. 34‘aBut pasture fields of their cities shall not be sold, for that is their perpetual possession.