Leviticus 21:10-12

Amplified Bible

¹⁰ ‘But he who is the high priest among his brothers, on whose head the anointing oil has been poured and who has been consecrated to wear the [sacred] garments, shall not uncover his head nor tear his clothes [in mourning], ¹¹ nor shall he approach any dead person, nor defile himself [by doing so, even] for his father or for his mother; ¹² nor shall he go out of the sanctuary nor profane (make ceremonially unclean) the sanctuary of his God, for the consecration of the anointing oil of his God is on him; I am the Lord.