Leviticus 21:10-12

10‘The priest who is 1highest among his brothers, on whose head the anointing oil has been poured and 2who has been consecrated to wear the garments, 3shall not 4uncover his head nor tear his clothes;

115nor shall he approach any dead person, nor defile himself even for his father or his mother;

126nor shall he leave the sanctuary nor profane the sanctuary of his God, for 7the consecration of the anointing oil of his God is on him; I am the Lord.