Leviticus 8:7-9, 30

He put the official tunic on Aaron and tied the sash around his waist. He dressed him in the robe, placed the ephod on him, and attached the ephod securely with its decorative sash. Then Moses placed the chestpiece on Aaron and put the Urim and the Thummim inside it. He placed the turban on Aaron’s head and attached the gold medallion—the badge of holiness—to the front of the turban, just as the LORD had commanded him.

Next Moses took some of the anointing oil and some of the blood that was on the altar, and he sprinkled them on Aaron and his garments and on his sons and their garments. In this way, he made Aaron and his sons and their garments holy.