Leviticus 25:46-48

Amplified Bible

⁴⁶ You may even bequeath them as an inheritance to your children after you, to receive as a possession; you can use them as permanent slaves. But in respect to your fellow countrymen, the children of Israel, you shall not rule over one another with harshness (severity, oppression).

Of Redeeming a Poor Man

⁴⁷ ‘Now if the financial means of a stranger or temporary resident among you become sufficient, and your fellow countryman becomes poor in comparison to him and sells himself to the stranger who is living among you or to the descendants of the stranger’s family, ⁴⁸ then after he is sold he shall have the right of redemption. One of his relatives may redeem him: