Leviticus 25:25-28

If one of your fellow Israelites falls into poverty and is forced to sell some family land, then a close relative should buy it back for him. If there is no close relative to buy the land, but the person who sold it gets enough money to buy it back, he then has the right to redeem it from the one who bought it. The price of the land will be discounted according to the number of years until the next Year of Jubilee. In this way the original owner can then return to the land. But if the original owner cannot afford to buy back the land, it will remain with the new owner until the next Year of Jubilee. In the jubilee year, the land must be returned to the original owners so they can return to their family land.