Exodus 29:7

29:7 You are to take the anointing oil and pour it on his head and anoint him.

Leviticus 4:3

For the Priest

4:3 “‘If the high priest sins so that the people are guilty, on account of the sin he has committed he must present a flawless young bull to the Lord for a sin offering.

Leviticus 8:12

8:12 He then poured some of the anointing oil on the head of Aaron and anointed him to consecrate him.

Leviticus 21:10

Rules for the High Priest

21:10 “‘The high priest – who is greater than his brothers, on whose head the anointing oil is poured, who has been ordained to wear the priestly garments – must neither dishevel the hair of his head nor tear his garments.