Deuteronomy 15:16-17  English Standard Version

¹⁶ But ^(A)if he says to you, ‘I will not go out from you,’ because he loves you and your household, since he is well-off with you, ¹⁷ then you shall take an awl, and put it through his ear into the door, and he shall be your slave^[a] forever. And to your female slave^[b] you shall do the same.