Leviticus 25:23-34

²³ "The land cannot be sold permanently because the land is mine and you are foreigners - you're my tenants. ²⁴ You must provide for the right of redemption for any of the land that you own. ²⁵ "If one of your brothers becomes poor and has to sell any of his land, his nearest relative is to come and buy back what his brother sold. ²⁶ If a man has no one to redeem it but he later prospers and earns enough for its redemption, ²⁷ he is to calculate the value since he sold it and refund the balance to the man to whom he sold it; he can then go back to his own land. ²⁸ If he doesn't get together enough money to repay him, what he sold remains in the possession of the buyer until the year of Jubilee. In the Jubilee it will be returned and he can go back and live on his land. ²⁹ "If a man sells a house in a walled city, he retains the right to buy it back for a full year after the sale. At any time during that year he can redeem it. ³⁰ But if it is not redeemed before the full year has passed, it becomes the permanent possession of the buyer and his descendants. It is not returned in the Jubilee. ³¹ However, houses in unwalled villages are treated the same as fields. They can be redeemed and have to be returned at the Jubilee. ³² "As to the Levitical cities, houses in the cities owned by the Levites are always subject to redemption. ³³ Levitical property is always redeemable if it is sold in a town that they hold and reverts to them in the Jubilee, because the houses in the towns of the Levites are their property among the People of Israel. ³⁴ The pastures belonging to their cities may not be sold; they are their permanent possession.