Nazir 6:4-5
Nazir 6:4
If a nazir drinks wine all day long, he is only liable once. If he was informed not to drink each time and he drank, he is liable for each one. If he shaves all day long, he is only liable once. If he was informed not to shave each time and he shaved, he is liable for each one. If he became ritually impure through corpse contamination all day long, he is only liable once. If he was informed not to become unclean each time and he allowed himself to be rendered unclean, he is liable for each one.
Nazir 6:5
A nazir is prohibited three things: ritual impurity, shaving and grape products. Ritual impurity and shaving are more stringent than grape products in that ritual impurity and shaving cause a nazir to lose days he has already completed but grape products do not. Grape products are more stringent than ritual impurity and shaving in that grape products are prohibited in every context while ritual impurity and shaving are permitted in certain contexts – a metzora (“leper,” but not really) may be shaved and a nazir may bury a meis mitzvah (corpse with no one to attend to it). Ritual impurity is more stringent than shaving in that being rendered unclean causes a nazir to lose all the days he has already completed, requiring a sacrifice, while shaving only cause a nazir to lose 30 days and does not obligate him to bring a sacrifice.