Leviticus 8:2, 12, 30

“Take Aaron and his sons with him, and the garments, the anointing oil, a bull as the sin offering, two rams, and a 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 some of the blood which was on the altar, and sprinkled it on Aaron, on his garments, on his sons, and on the garments of his sons with him; and he consecrated Aaron, his garments, his sons, and the garments of his sons with him.