Numbers 6:6-8

Darby Translation

⁶ All the days that he hath consecrated himself to Jehovah, he shall come near no 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; for the consecration of his God is upon his head.

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