Numbers 18:17

Catholic Public Domain Version

But the firstborn of a cow, or of a sheep, or of a goat, you shall not cause to be redeemed, because they have been sanctified to the Lord. Thus, their blood you shall pour out upon the altar, and their fat you shall burn as a most sweet odor to the Lord.

Cross References

Exodus 29:16

And when you will have sacrificed it, you shall take from its blood and pour it around the altar.

Leviticus 17:6

And the priest shall pour the blood upon the altar of the Lord, at the door of the tabernacle of the testimony, and he shall burn the fat as a sweet odor to the Lord.

Numbers 18:16

And its redemption shall be, after one month, five shekels of silver, by the weight of the Sanctuary. A shekel has twenty obols.