Ezekiel 43:20 in the World English Bible
You shall take of its blood and put it on its four horns, and on the four corners of the ledge, and on the border all around. You shall cleanse it and make atonement for it that way.
Context
19 And thou shalt give to the priests the Levites that be of the seed of Zadok, which approach unto me, to minister unto me, saith the Lord GOD, a young bullock for a sin offering.
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 cleanse and purge it.
21 Thou shalt take the bullock also of the sin offering, and he shall burn it in the appointed place of the house, without the sanctuary.