Numbers 18:17

New English Translation

But you must not redeem the firstborn of a cow or a sheep or a goat; they are holy. You must splash their blood on the altar and burn their fat for an offering made by fire for a pleasing aroma to the Lord.

Cross References

Exodus 29:16

and you are to kill the ram and take its blood and splash it all around on the altar.

Leviticus 17:6

The priest is to splash the blood on the altar of the Lord at the entrance of the Meeting Tent, and offer the fat up in smoke for a soothing aroma to the Lord.

Numbers 18:16

And those that must be redeemed you are to redeem when they are a month old, according to your estimation, for five shekels of silver according to the sanctuary shekel (which is twenty gerahs).