Deuteronomy 15:17-19

Complete Jewish Bible

¹⁷ then take an awl, and pierce his ear through, right into the door; and he will be your slave forever. Do the same with your female slave. ¹⁸ Don’t resent it when you set him free, since during his six years of service he has been worth twice as much as a hired employee. Then Adonai your God will bless you in everything you do.

(vii) ¹⁹ “All the firstborn males in your herd of cattle and in your flock you are to set aside for Adonai your God; you are not to do any work with a firstborn from your herd or shear a firstborn sheep.