Numbers 6:7 ASV

⁵  All the days of his vow of separation there shall no razor come upon his head: until the days be fulfilled, in which he separateth himself unto Jehovah, he shall be holy; he shall let the locks of the hair of his head grow long.

⁶  All the days that he separateth himself unto Jehovah he shall not come near to a dead body.

⁷  He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die; because his separation unto God is upon his head.

⁸  All the days of his separation he is holy unto Jehovah.

⁹  And if any man die very suddenly beside him, and he defile the head of his separation; then he shall shave his head in the day of his cleansing, on the seventh day shall he shave it.