Leviticus 8:2, 12, 30

“Take Aaron and his sons with him, and the garments and the anointing oil and the bull of the sin offering and the two rams and the basket of unleavened bread.

And he poured some of the anointing oil on Aaron’s head and anointed him to consecrate him.

Then Moses took some of the anointing oil and of the blood that was on the altar and sprinkled it on Aaron and his garments, and also on his sons and his sons’ garments. So he consecrated Aaron and his garments, and his sons and his sons’ garments with him.