Num 6:6-8
Because the Nazarite wore the diadem of his God upon his head in the growth of his hair, and was holy to the Lord during the whole period of his consecration, he was to approach no dead person during that time, not even to defile himself for his parents, or his brothers and sisters, when they died, according to the law laid down for the high priest in Lev 21:11. Consequently, as a matter of course, he was to guard most scrupulously against other defilements, not only like ordinary Israelites, but also like the priests. Samson’s mother, too, was not allowed to eat anything unclean during the period of her pregnancy (Jdg 13:4, Jdg 13:7, Jdg 13:14).