Mishnah Nazir 8

¹Two nazirites to whom someone says, “I saw one of you defiled, but I do not know which of you it was,” [Both] must shave and [together] bring sacrifices for defilement and sacrifices [for completing a naziriteship] in purity, [and one of them] must say, “If I am unclean, the sacrifices for defilement are mine, and the sacrifices in purity are yours, whereas if I am the one who is clean, the sacrifices in purity are mine and the sacrifices for defilement are yours.” And they must then count thirty [more] days and bring sacrifices in purity and [one of them] must say, “If I am the one who was unclean, the sacrifices for defilement were mine, the sacrifices in purity were yours, and these are my sacrifices in purity, whereas if I was the one who was clean, the sacrifices in purity were mine, the sacrifices for defilement were yours, and these are your sacrifices in purity.” If one of them dies: Rabbi Joshua said that [the other] should request that someone from the marketplace take a nazirite vow together with him, and say: “If I am unclean, you are to be a nazirite immediately, but if I was clean, you are to become a nazirite at the end of thirty days.” They then count thirty days and bring sacrifices for defilement and sacrifices [for completing a naziriteship] in purity and [the first one] says, “If I am the one who was unclean, the sacrifices for defilement are mine and the sacrifices in purity are yours, whereas if I am the one who is clean, the sacrifices in purity are mine and the sacrifices for defilement are [sacrifices offered] in doubt.” They then count [another] thirty days and bring [one set of] the sacrifices in purity and [the first one] says, “If I am the one who was defiled, the sacrifice for defilement [offered previously] was mine and the sacrifice in purity was yours, and this is my sacrifice in purity, whereas if I was the one who was clean, the sacrifice in purity was mine and the sacrifice for defilement [was offered] in doubt and this is your sacrifice in purity.” Ben Zoma said to him: Who will listen to him and take a nazirite vow together with him? Rather he must bring a bird as a sin offering and an animal as a burnt offering and say, “If I was defiled, the sin offering is part of my obligation and the burnt offering is a voluntary offering, whereas if I remained clean, the burnt-offering is part of my obligation and the sin offering is [a sacrifice offered] in doubt.” ‘ He must then count thirty days and bring the sacrifices in purity and say, “If I was defiled, the former burnt offering was a voluntary offering and this is part of my obligation, whereas if I remained clean, the former burnt offering was part of my obligation and this is the voluntary one. And these are the rest of my sacrifices.” Rabbi Joshua said: the result is that he brings his sacrifices half at a time! But the Sages agreed with Ben zoma. ²A nazirite who was in doubt whether he had been defiled and in doubt whether he had been a confirmed leper, may eat consecrated food after sixty days, and drink wine and come into contact with the dead after one hundred and twenty days, since shaving on account of leprosy overrides [the prohibition against] the shaving of the nazirite only when [the leprosy] is certain, but when it is doubtful it does not override it.