Exodus 29:11, 16, 20

Then kill the bull before the LORD at the entrance to the Meeting Tent.

Kill it, and take its blood and sprinkle it on all four sides of the altar.

Kill it and take some of its blood. Put the blood on the bottom of the right ears of Aaron and his sons and on the thumbs of their right hands and on the big toes of their right feet. Then sprinkle the rest of the blood against all four sides of the altar.