Numbers 18:15-17

Evangelical Heritage Version

¹⁵ The firstborn from every living thing, human or animal, whatever they present to the Lord, will be yours. However, you must redeem the firstborn of any human. You must also redeem the firstborn of an unclean animal. ¹⁶ When they are one month old, you must redeem them at the set redemption price, five shekels of silver, according to the sanctuary shekel, which weighs twenty gerahs.

¹⁷ However, you may not redeem the firstborn of the cattle, sheep, or goats. They are set aside as holy. You will splash their blood on the altar and turn their fat into smoke as an offering made by fire, with a pleasing aroma to the Lord.