Leviticus 21:10-11 (New International Version)

 ¹⁰ " 'The high priest, the one among his brothers who has had the anointing oil poured on his head and who has been ordained to wear the priestly garments, must not let his hair become unkempt ^[a] or tear his clothes. ¹¹ He must not enter a place where there is a dead body. He must not make himself unclean, even for his father or mother,