Numbers 18:15-17

Christian Standard Bible

¹⁵ The firstborn of every living thing, human or animal, presented to the Lord belongs to you. But you must certainly redeem a human firstborn,^(A) and redeem the firstborn of an unclean animal. ¹⁶ You will pay the redemption price for a month-old male according to your assessment: five shekels^[a] of silver by the standard sanctuary shekel, which is twenty gerahs.^(B)

¹⁷ “However, you must not redeem the firstborn of an ox, a sheep, or a goat; they are holy. You are to splatter their blood on the altar and burn their fat as a food offering for a pleasing aroma to the Lord.