Deuteronomy 15:17-19

Amplified Bible

¹⁷ then take an awl and pierce it through his ear into the door, and he shall [willingly] be your servant always. Also you shall do the same for your maidservant.^(A)

¹⁸ “It shall not seem hard to you when you set him free, for he has served you six years with double the service of a hired man; so the Lord your God will bless you in everything you do.

¹⁹ “You shall consecrate (set apart) to the Lord your God all the firstborn males that are born of your herd and flock. You shall not work with the firstborn of your herd, nor shear the firstborn of your flock.