Leviticus 25:47-49

47‘Now if the financial means of a stranger or temporary resident among you become sufficient, and your fellow countryman becomes poor in comparison to him and sells himself to the stranger who is living among you or to the descendants of the stranger’s family,

48then after he is sold he shall have the right of redemption. One of his relatives may redeem him:

49either his uncle or his uncle’s son may redeem him, or one of his blood relatives from his family may redeem him; or if he prospers, he may redeem himself.