Leviticus 1:2

1:2 “Speak to the Israelites and tell them, ‘When someone among you presents an offering to the Lord, you must present your offering from the domesticated animals, either from the herd or from the flock.

Leviticus 1:5

1:5 Then the one presenting the offering must slaughter the bull before the Lord, and the sons of Aaron, the priests, must present the blood and splash the blood against the sides of the altar which is at the entrance of the Meeting Tent.

Leviticus 6:9

6:9 “Command Aaron and his sons, ‘This is the law of the burnt offering. The burnt offering is to remain on the hearth on the altar all night until morning, and the fire of the altar must be kept burning on it.