Leviticus 25:47-49

47“ ‘If a foreigner residing among you becomes rich and any of your fellow Israelites become poor and sell themselves to the foreigner or to a member of the foreigner’s clan, 48they retain the right of redemption after they have sold themselves. One of their relatives may redeem them: 49An uncle or a cousin or any blood relative in their clan may redeem them. Or if they prosper, they may redeem themselves.