Leviticus 14:9; Leviticus 21:5

9 But it shall be on the seventh day, that he shall shave all his hair off his head and his beard and his eyebrows , even all his hair he shall shave off: and he shall wash his clothes, also he shall wash his flesh in water, and he shall be clean .
5 They shall not make baldness upon their head, neither shall they shave off the corner of their beard, nor make any cuttings in their flesh.