Leviticus 25:47-49

47And if a stranger or sojourner become wealthy beside thee, and thy brother beside him grow poor, and sell himself unto the stranger, who is settled by thee, or to a scion of the stranger's family,

48after that he is sold there shall be right of redemption for him; one of his brethren may redeem him.

49Either his uncle or his uncle's son may redeem him, or one of his next relations of his family may redeem him; or if his means be sufficient, he may redeem himself.