Deuteronomy 15:18-20 Revised Standard Version (RSV)
18 It shall not seem hard to you, when you let him go free from you; for at half the cost of a hired servant he has served you six years. So the Lord your God will bless you in all that you do.
The Firstborn of Livestock
19 “All the firstling males that are born of your herd and flock you shall consecrate to the Lord your God; you shall do no work with the firstling of your herd, nor shear the firstling of your flock. 20 You shall eat it, you and your household, before the Lord your God year by year at the place which the Lord will choose.