Leviticus 25:37-41

³⁷You shall not lend your money to him at interest, and you shall not lend your meat to him to be returned with increase.

³⁸I am the Lord your God, who brought you out of the land of Egypt, to give you the land of Chanaan, so as to be your God.

³⁹And if your brother by you be lowered, and be sold to you, he shall not serve you with the servitude of a slave.

⁴⁰He shall be with you as a hireling or a sojourner, he shall work for you till the year of release:

⁴¹and he shall go out in the release, and his children with him; and he shall go to his family, he shall hasten back to his patrimony.