Leviticus 25:39-46

39“If your brother among you becomes destitute and sells himself to you, you must not force him to do slave labor.

40Let him stay with you as a hired worker or temporary resident; he may work for you until the Year of Jubilee.

41Then he and his children are to be released from you, and he may return to his clan and his ancestral property.

42They are not to be sold as slaves, because they are my servants that I brought out of the land of Egypt.

43You are not to rule over them harshly but fear your God.

44Your male and female slaves are to be from the nations around you; you may purchase male and female slaves.

45You may also purchase them from the aliens residing with you, or from their families living among you — those born in your land. These may become your property.

46You may leave them to your sons after you to inherit as property; you can make them slaves for life. But concerning your brothers, the Israelites, you must not rule over one another harshly.