Leviticus 25:23-27

‘The land, moreover, shall not be sold permanently, because the land is Mine; for you are only strangers and residents with Me.

So for every piece of your property, you are to provide for the redemption of the land.

‘If a fellow countryman of yours becomes so poor that he sells part of his property, then his closest redeemer is to come and buy back what his relative has sold.

Or in case someone has no redeemer, but recovers to find sufficient means for its redemption,

then 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 property.