Leviticus 4:5

2 Say to the children of Israel: These are the offerings of anyone who does wrong through error, doing any of the things which by the Lord's order are not to be done:

3 If the chief priest by doing wrong becomes a cause of sin to the people, then let him give to the Lord for the sin which he has done, an ox, without any mark, for a sin-offering.

4 And he is to take the ox to the door of the Tent of meeting before the Lord; and put his hand on its head and put it to death before the Lord.

5 And the chief priest is to take some of its blood and take it to the Tent of meeting;

6 And the priest is to put his finger in the blood, shaking drops of it before the Lord seven times, in front of the veil of the holy place.

7 And the priest is to put some of the blood on the horns of the altar on which perfume is burned before the Lord in the Tent of meeting, draining out all the rest of the blood of the ox at the base of the altar of burned offering which is at the door of the Tent of meeting.

8 And he is to take away all the fat of the ox of the sin-offering; the fat covering the inside parts and all the fat of the inside parts,