Nazir 9:3-4

Nazir 9:3

If a person finds a corpse for the first time and it is lying in the manner in which people are normally buried, he may exhume it and the dirt that absorbed its blood (for re-interment in an actual cemetery). If he found two such corpses, he may do likewise. What if he found three such corpses? Then, if there are from four to eight cubits (approximately six to twelve feet) in between the bodies, it is a cemetery (and the bodies may not be exhumed). He examines a 20-cubit diameter (about 30 feet); if he finds another body within these 20 cubits, he examines another 20 cubits from that body. Even if he doesn’t find any other bodies, there is reason to assume this body was properly buried here (because of the three that were buried near one another), even though, had he found this body first, he would have exhumed and re-interred the body with its dirt.

Nazir 9:4

A doubt regarding skin blemishes at the beginning (when a person is under a presumption of ritual cleanliness) is considered clean until confirmed unclean. If a person is already unclean, such a doubt is considered unclean. A man who has a particular emission is examined regarding seven things before he is ruled to be a zav: what he ate and drank, whether he carried a heavy load or jumped, if he had been ill, and if he had seen or thought anything that sexually excited him. Once a person has been determined to be a zav, they no longer examine him. Circumstances beyond his control, his doubts about his discharges and his seminal emissions are all considered unclean because of his precedent of being a zav. If one person strikes another and he is determined to be likely to die, but then his condition improves, only to worsen again and he dies, the one who struck him is liable. Rabbi Nechemiah says that the one who struck him is exempt because there is reason to believe that he didn’t cause the death.