You 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.
Jewish Publication Society of America Version (JPS1917) - Ezekiel 43:20 >And thou shalt take of the blood thereof, and put it on the four horns of it, and on the four corners of the settle, and upon the border round about; thus shalt thou purify it and make atonement for it.