Leviticus 25:23-28

The land shall not be sold for ever: for the land is mine; for ye are strangers and sojourners with me. And in all the land of your possession ye shall grant a redemption for the land. If thy brother be waxen poor, and hath sold away some of his possession, and if any of his kin come to redeem it, then shall he redeem that which his brother sold. And if the man have none to redeem it, and himself be able to redeem it; then let him count the years of the sale thereof, and restore the overplus unto the man to whom he sold it; that he may return unto his possession. But if he be not able to restore it to him, then that which is sold shall remain in the hand of him that hath bought it until the year of jubile: and in the jubile it shall go out, and he shall return unto his possession.