Ezekiel 43:19-21

19you shall give to the Levitical priests of the family of Zadok, who draw near to me to minister to me, declares the Lord God, a bull from the herd for a sin offering.

20And you shall take some of its blood and put it on the four horns of the altar and on the four corners of the ledge and upon the rim all around. Thus you shall purify the altar and make atonement for it.

21You shall also take the bull of the sin offering, and it shall be burned in the appointed place belonging to the temple, outside the sacred area.