Numbers 6:7-9

Complete Jewish Bible

⁷ He is not to make himself unclean for his father, mother, brother or sister when they die, since his consecration to God is on his head. ⁸ Throughout the time of his being a nazir he is holy for Adonai.

⁹ “‘If someone next to him dies very suddenly, so that he defiles his consecrated head, then he is to shave his head on the day of his purification; he is to shave it on the seventh day.