Leviticus 4:7

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,

9 And the two kidneys, with the fat on them, which is by the top part of the legs, and the fat joining the liver and the kidneys, he is to take away,

10 As it is taken from the ox of the peace-offering; and it is to be burned by the priest on the altar of burned offerings.