17בַּמֶּה דְּבָרִים אֲמוּרִים כְּשֶׁשָּׁתְקוּ הַנְּזִירִים שְׁנֵיהֶם אוֹ נִסְתַּפֵּק לָהֶן הַדָּבָר. אֲבָל אִם אָמַר אֶחָד מֵהֶן אֲנִי לֹא נִטְמֵאתִי אֲפִלּוּ שְׁנֵי עֵדִים מְעִידִים עָלָיו שֶׁנִּטְמָא אֵינוֹ מֵבִיא קָרְבָּן עַל פִּיהֶם. שֶׁזֶּה שֶׁאָמַר לֹא נִטְמֵאתִי כְּאוֹמֵר אֵינִי מֵבִיא בְּטֻמְאָה שֶׁכְּבָר נִשְׁאַלְתִּי עַל נְזִירוּתִי וְנִמְצָא שֶׁאֵינוֹ מַכְחִישׁ אֶת הָעֵדִים וְאָדָם נֶאֱמָן עַל יְדֵי עַצְמוֹ. אֲבָל אִם שָׁתַק אוֹ נִסְתַּפֵּק לוֹ הֲרֵי זֶה מֵבִיא קָרְבָּן אֲפִלּוּ עַל פִּי עֵד אֶחָד כְּמוֹ שֶׁבֵּאַרְנוּ. וְכֵן עֵד שֶׁאָמַר לְאֶחָד בְּפָנַי נָדַרְתָּ בִּנְזִירוּת אִם הִכְחִישׁוֹ אֵינוֹ חַיָּב כְּלוּם. וְאִם לֹא הִכְחִישׁוֹ נוֹהֵג נְזִירוּת עַל פִּיו. אֲפִלּוּ אָמַר לִשְׁנַיִם רָאִיתִי אֶחָד מִכֶּם שֶׁנָּזַר וְאֵינִי יוֹדֵעַ מִי הוּא הוֹאִיל וְאֵין מַכְחִישִׁין אוֹתוֹ נוֹהֲגִין נְזִירוּת עַל פִּיו. נָהַג נְזִירוּת עַל פִּי עֵד אֶחָד וְשָׁתָה יַיִן אוֹ נִטְמָא וְהִתְרוּ בּוֹ [שְׁנַיִם] לוֹקֶה אַף עַל פִּי שֶׁעִקַּר הַנְּזִירוּת בְּעֵד אֶחָד:
When does the above apply? When both nazirites remain silent or the matter is doubtful for them. If, however, one of them says: "I did not become ritually impure," even if two witnesses testify that he became impure, he does not bring a sacrifice because of their statements. His statement: "I did not become ritually impure," can be understood to mean: "I will not bring a sacrifice [because of] impurity, because I have already asked [a sage] to absolve my vow." Thus he is not contradicting the witnesses and a person's word is accepted with regard to his own person. If, however, he remained silent or was in doubt concerning the matter, he should bring a sacrifice even when the cause is the testimony of one witness, as we explained [above] Similarly, if a witness tells a person: "You took a nazirite vow in my presence" and that person disputes the matter, he is not liable for anything. If he does not dispute the matter, he must observe [the restrictions of] a nazirite vow because of his statements. Even if [a person] told two others, "I saw one of you take a nazirite vow, but I do not know which of you it was," since [neither of them] dispute his statements, they both must observe a nazirite vow, because of his statements. If a person observed a nazirite vow because of the statements of one witness and drank wine or became impure [due to contact with a corpse] and two witnesses administered a warning, he is given lashes even though the fundamental dimension of the testimony is dependent on one witness.