Numbers 6:7
Even if his father or mother or brother or sister should die, he is not to defile himself, because the crown of consecration to his God is upon his head.
Berean Standard 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 the consecration of his God is upon his head.
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.