נָּזִיר שֶׁשָּׁתָה יַיִן וְאָכַל יוֹצֵא מִן הַגֶּפֶן אֲפִלּוּ יָמִים רַבִּים אֵינוֹ סוֹתֵר מִימֵי נְזִירוּתוֹ אֲפִלּוּ יוֹם אֶחָד. וְכֵן אִם גִּלֵּחַ מִעוּט שְׂעַר רֹאשׁוֹ בֵּין בְּשׁוֹגֵג בֵּין בְּמֵזִיד. נִתְגַּלֵּחַ רֹב רֹאשׁוֹ בֵּין בְּתַעַר בֵּין כְּעֵין תַּעַר וְלֹא נִשְׁאַר מִן הַשְּׂעָרוֹת כְּדֵי לָכֹף רֹאשָׁן לְעִקָּרָן בֵּין בְּזָדוֹן בֵּין בִּשְׁגָגָה אֲפִלּוּ גִּלְּחוּהוּ לִסְטִים בְּאֹנֶס הֲרֵי זֶה סוֹתֵר שְׁלֹשִׁים יוֹם עַד שֶׁיִּהְיֶה לוֹ פֶּרַע וְאַחַר כָּךְ מַתְחִיל לִמְנוֹת:
When a nazirite drinks wine or eats a grape product, even if he does so for many days, he does not invalidate even one of the days of his nazirite vow. Similar [principles apply] if he shaved a minority of his head, whether intentionally or unintentionally. If, however, the majority of his head was shaved, whether with a razor or through another means which is as effective as a razor and enough of the hairs to fold over their head to their base were removed whether intentionally or unintentionally - even if thieves shaved his head against his will - thirty days are invalidated. [He must wait] until he has an uncut mane of hair. Afterwards, he counts [the remaining days].
