He shall not defile himself for his father or for his mother, for his brother or for his sister, when they die, because the Nazirite vow to his God is on his head.
But they shall not go to a dead person to make themselves unclean; however, for father, for mother, for son, for daughter, for brother, or for a sister who has not had a husband, they may make themselves unclean.
But there were some men who were unclean because of a dead person, so that they could not celebrate Passover on that day; so they came near before Moses and Aaron on that day.