Leviticus 21:5 in the King James Version
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.
Context
4 He shall not defile himself, being a chief man among his people, to profane himself.
5 “‘They shall not shave their heads or shave off the corners of their beards or make any cuttings in their flesh.
6 They shall be holy to their God, and not profane the name of their God, for they offer the offerings of the LORD made by fire, the bread of their God. Therefore they shall be holy.