Deuteronomy 15:17-19

English Standard Version

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. ¹⁸ It shall not seem hard to you when you let him go free from you, for at half the cost of a hired worker he has served you six years. So the Lord your God will bless you in all that you do.

^19 (A)“All the firstborn males that are born of your herd and flock you shall dedicate to the Lord your God. You shall do no work with the firstborn of your herd, nor shear the firstborn of your flock.