Leviticus 25:42-44

Revised Standard Version

⁴² For they are my servants, whom I brought forth out of the land of Egypt; they shall not be sold as slaves. ⁴³ You shall not rule over him with harshness, but shall fear your God. ⁴⁴ As for your male and female slaves whom you may have: you may buy male and female slaves from among the nations that are round about you.