Leviticus 25:39-41

LITV(i) 39 And when your brother becomes poor with you, and he has been sold to you, you shall not lay on him the service of a slave. 40 He shall be with you as a hireling, as a tenant he shall be with you; he shall serve with you until the year of jubilee; 41 then he shall go out from you, he and his sons with him, and shall return to his family; he shall even return to the possession of his father.