Leviticus 25:28

But if he be not able to restore it to him, if he cannot raise the money needed to regain possession of his land in this way, then that which is sold shall remain in the hand of him that hath bought it until the year of jubilee; and in the jubilee it shall go out, and he shall return unto his possession, for the provision was that all leases, called sales, should terminate in the Year of Jubilee.