Ezekiel 43:19-21

19You are to give a young bull from the herd as a sin offering to the Levitical priests who are of the family of Zadok, who approach Me to minister before Me, declares the Lord GOD. 20You are to take some of its blood and put it on the four horns of the altar, on the four corners of the ledge, and all around the rim; thus you will cleanse the altar and make atonement for it. 21Then you are to take away the bull for the sin offering and burn it in the appointed part of the temple area outside the sanctuary.