Numbers 6:7-9

Young's Literal Translation

⁷ for his father, or for his mother, for his brother, or for his sister -- he is not unclean for them at their death, for the separation of his God [is] on his head;

⁸ all days of his separation he [is] holy to Jehovah.

⁹ `And when the dead dieth beside him in an instant, suddenly, and he hath defiled the head of his separation, then he hath shaved his head in the day of his cleansing; on the seventh day he doth shave it,