Numbers 18:17
You must never buy back a firstborn bull, sheep, or goat. They are holy. Throw the blood from these animals against the altar. Burn the fat as an offering by fire, a soothing aroma to Jehovah.
Exodus 29:16
Slaughter the ram. Take its blood and sprinkle it all around the altar.
Leviticus 3:2-5
Put your hand on the head of the animal and kill it at the entrance of the Tent of Jehovah's presence. Then Aaron's sons the priests must throw the blood against all four sides of the altar.
Deuteronomy 15:19-22
To Jehovah your God you shall consecrate all the firstborn males that are born of your herd and of your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.