Ezekiel 43:19-21

19At that time, the Levitical priests of the family of Zadok, who minister before me, are to be given a young bull for a sin offering, says the Sovereign Lord.

20You will take some of its blood and smear it on the four horns of the altar, the four corners of the upper ledge, and the curb that runs around that ledge. This will cleanse and make atonement for the altar.

21Then take the young bull for the sin offering and burn it at the appointed place outside the Temple area.