Leviticus 9:8

New International Version

So Aaron came to the altar and slaughtered the calf as a sin offering for himself.

Cross References

Leviticus 10:19

Aaron replied to Moses, “Today they sacrificed their sin offering and their burnt offering before the Lord, but such things as this have happened to me. Would the Lord have been pleased if I had eaten the sin offering today?”

Leviticus 4:29

They are to lay their hand on the head of the sin offering and slaughter it at the place of the burnt offering.