Leviticus 25:39-41

And if thy brother be waxed poor with thee, and sell himself unto thee; thou shalt not make him to serve as a bondservant. As a hired servant, and as a sojourner, he shall be with thee; he shall serve with thee unto the year of jubilee: then shall he go out from thee, he and his children with him, and shall return unto his own family, and unto the possession of his fathers shall he return.