Leviticus 25:45-47

The Voice

⁴⁵ and from the outsiders who live among you. You can acquire their family members who have been born in the land. You can keep them as property ⁴⁶ and pass them down to your children as part of their inheritance for all time. You may continue to own them, even after jubilee. Remember if your slave is a fellow Israelite, then you must not deal with him harshly.

⁴⁷ If a foreigner or outsider living among you becomes rich enough to buy a slave, and one of your fellow citizens has become poor enough he has to sell himself as a slave to him or to his extended family,