Leviticus 25:25-30

25‘If a fellow countryman of yours becomes so poor he has to sell some of his property, then his nearest relative is to come and buy back (redeem) what his relative has sold.

26Or in case a man has no relative [to redeem his property], but he has become more prosperous and has enough to buy it back,

27then he shall calculate the years since its sale and refund the balance to the man to whom he sold it, and so return to his [ancestral] property.

28But if he is unable to redeem it, then what he has sold shall remain in the hands of the purchaser until the Year of Jubilee; but at the Jubilee it shall revert, and he may return to his property.

29‘If a man sells a house in a walled city, then his right of redemption remains valid for a full year after its sale; his right of redemption lasts a full year.

30But if it is not redeemed for him within a full year, then the house that is in the walled city passes permanently and irrevocably to the purchaser throughout his generations. It does not revert back in the Year of Jubilee.