Leviticus 25:39-43

“If one of your brothers becomes indigent and has to sell himself to you, don’t make him work as a slave. Treat him as a hired hand or a guest among you. He will work for you until the Jubilee, after which he and his children are set free to go back to his clan and his ancestral land. Because the People of Israel are my servants whom I brought out of Egypt, they must never be sold as slaves. Don’t tyrannize them; fear your God.