Leviticus 25:45

45You may also buy some of the temporary residents living among you and members of their clans born in your country, and they will become your property.

45You may also acquire them from the sons of the foreign residents who reside among you, and from their families who are with you, whom they will have produced in your land; they also may become your possession.

45Then, too, it is out of the sons of the sojourners who live as aliens among you that you may gain acquisition, and out of their families who are with you, whom they will have produced in your land; they also may become your possession.

45Moreover, from the children of the strangers who live as aliens among you, from them you may buy slaves and from their families who are with you, whom they have produced in your land; they may become your possession.

45You may also purchase them from the foreigners residing among you or their clans living among you who are born in your land. These may become your property.

45You can also buy as slaves some of the people living among you for a while. You can also buy members of their families born among you. They will become your property.