Leviticus 4:25-26

25Then the priest will take some of the blood of the offering for sin with his finger and put it on the horns of the altar for burnt offerings. He will pour the rest of the blood at the bottom of the altar for burnt offerings.

26He will burn all the fat on the altar the same way the fat of the fellowship offering is burned. So the priest will make peace with the Lord for what the leader did wrong, and the leader will be forgiven.