Exodus 29:10

29:10 “You are to present the bull at the front of the tent of meeting, and Aaron and his sons are to put their hands on the head of the bull.

Leviticus 1:4-9

1:4 He must lay his hand on the head of the burnt offering, and it will be accepted for him to make atonement on his behalf. 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. 1:6 Next, the one presenting the offering must skin the burnt offering and cut it into parts, 1:7 and the sons of Aaron, the priest, must put fire on the altar and arrange wood on the fire. 1:8 Then the sons of Aaron, the priests, must arrange the parts with the head and the suet on the wood that is in the fire on the altar. 1:9 Finally, the one presenting the offering must wash its entrails and its legs in water and the priest must offer all of it up in smoke on the altar – it is a burnt offering, a gift of a soothing aroma to the Lord.