But you must not redeem the firstborn of an ox, a sheep, or a goat; they are holy. You are to sprinkle their blood on the altar and burn their fat as an offering made by fire, a pleasing aroma to the LORD.

Leviticus 3:2
He is to lay his hand on the head of the offering and slaughter it at the entrance to the Tent of Meeting. Then Aaron's sons the priests shall sprinkle the blood on all sides of the altar.

Leviticus 17:6
The priest will then sprinkle the blood on the altar of the LORD at the entrance to the Tent of Meeting and burn the fat as a pleasing aroma to the LORD.

Numbers 18:16
You are to pay the redemption price for a month-old male according to your valuation: five shekels of silver, according to the sanctuary shekel, which is twenty gerahs.

Deuteronomy 15:19
You must set apart to the LORD your God every firstborn male produced by your herds and flocks. You are not to put the firstborn of your oxen to work, nor are you to shear the firstborn of your flock.

But the firstling of a cow, or the firstling of a sheep, or the firstling of a goat, you shall not redeem; they are holy: you shall sprinkle their blood on the altar, and shall burn their fat for an offering made by fire, for a sweet smell to the LORD.