Leviticus 25:40-42

⁴⁰as an hireling, as a settler, he is with thee, till the year of the jubilee he doth serve with thee, —

⁴¹then he hath gone out from thee, he and his sons with him, and hath turned back unto his family; even unto the possession of his fathers he doth turn back.

⁴²'For they are My servants, whom I have brought out from the land of Egypt: they are not sold with the sale of a servant;