Les Nombres 5:13 Références de la Michna : Mishnah Yevamot, Mishnah Sotah, Mishnah Nazir & Mishnah Eduyot

The commandment to perform yibbum is upon the oldest brother. If a younger brother preempted him [by performing yibbum], he has acquired [a wife]. If a man is suspected of [having relations] with a slave and then she was freed, or with a non-Jewish woman who then converted, he must not marry her. If, however, he did marry her they do not take her away from him. If a man is suspected of [having relations] with a married woman, and then [in consequence] she was taken away from her husband, even though he married her, he must divorce her.

For it would have been logical: Now if the first evidence [that the woman had secluded herself with the man], which does not prohibit her [to her husband] for all time, is not established by fewer than two witnesses, is it not logical that the final evidence [that she had been defiled] which does prohibit her to him for all time, should not be established by fewer than two witnesses! Scripture states, “And there is no witness against her” (Numbers 5:13) whatever testimony there may be against her [is believed]. And now with respect to the first evidence [about her seclusion with the man] there is an a fortiori (kal vehomer) argument: Now if the final evidence [regarding her being defiled], which prohibits her to her husband for all time, is established by one witness, is it not logical that the first evidence, which does not prohibit her to him for all time, should be established by one witness! Scripture states, “Because he has found some unseemly matter in her” (Deuteronomy 24:1), and elsewhere [Scripture] states, “By the mouth of two witnesses ... shall the matter be established” (Deuteronomy 19:15); just as the “matter” mentioned in this latter case must be based on the testimony of two witnesses, so also here [in the case of the suspected woman] the “matter” must be based on the testimony of two witnesses.

Two 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.