Exodus 29:11, 16, 20

And thou shalt kill the bullock before the LORD, by the door of the tabernacle of the congregation.

And thou shalt slay the ram, and thou shalt take his blood, and sprinkle it round about upon the altar.

Then shalt thou kill the ram, and take of his blood, and put it upon the tip of the right ear of Aaron, and upon the tip of the right ear of his sons, and upon the thumb of their right hand, and upon the great toe of their right foot, and sprinkle the blood upon the altar round about.