Leviticus 21:8

5 They shall not make baldness on their head, neither shall they shave off the corner of their beard, nor make any cuttings in their flesh.

6 They shall be holy to their God, and not profane the name of their God; for the offerings of Yahweh made by fire, the bread of their God, they do offer: therefore they shall be holy.

7 They shall not take a woman that is a prostitute, or profane; neither shall they take a woman put away from her husband: for he is holy to his God.

8 You shall sanctify him therefore; for he offers the bread of your God: he shall be holy to you: for I Yahweh, who sanctify you, am holy.

9 The daughter of any priest, if she profane herself by playing the prostitute, she profanes her father: she shall be burnt with fire.

10 He who is the high priest among his brothers, on whose head the anointing oil is poured, and that is consecrated to put on the garments, shall not let the hair of his head go loose, nor tear his clothes;

11 neither shall he go in to any dead body, nor defile himself for his father, or for his mother;