Leviticus 21:10 in the King James Version
And he that is the high priest among his brethren, upon whose head the anointing oil was poured, and that is consecrated to put on the garments, shall not uncover his head, nor rend his clothes;
Context
9 “‘The daughter of any priest, if she profanes herself by playing the prostitute, she profanes her father. She shall be burned with fire.
10 “‘He who is the high priest among his brothers, upon whose head the anointing oil is poured, and who is consecrated to put on the garments, shall not let the hair of his head hang loose, or tear his clothes.
11 He must not go in to any dead body, or defile himself for his father or for his mother.