Numbers 18:17

The English Standar Version

But the firstborn of a cow, or the firstborn of a sheep, or the firstborn of a goat, you shall not redeem; they are holy. You shall sprinkle their blood on the altar and shall burn their fat as a food offering, with a pleasing aroma to the LORD.

Cross References

Exodus 29:16

and you shall kill the ram and shall take its blood and throw it against the sides of the altar.

Leviticus 17:6

And the priest shall throw the blood on the altar of the LORD at the entrance of the tent of meeting and burn the fat for a pleasing aroma to the LORD.

Numbers 18:16

And their redemption price (at a month old you shall redeem them) you shall fix at five shekels[2] in silver, according to the shekel of the sanctuary, which is twenty gerahs.