Numbers 6:7 in the World English Bible
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 to God is on his head.
Context
6 All the days that he separateth himself unto the LORD he shall come at 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: because the consecration of his God is upon his head.
8 All the days of his separation he is holy unto the LORD.