Nedarim 3B

שהנזירות חל על הנזירות.

that a term of naziriteship takes effect upon a previously accepted term of naziriteship. Consequently, if one became a nazirite and then again declared: I am hereby a nazirite, then when his term of naziriteship is completed he must observe a second term of naziriteship.

ולמאן דאמר דברה תורה כלשון בני אדם, ו״נזיר להזיר״ דריש לעשות ידות נזירות כנזירות, שהנזירות חל על הנזירות מנא ליה? הניחא אי סבירא ליה כמאן דאמר אין נזירות חל על נזירות. אלא אי סבירא ליה כמאן דאמר נזירות חל על נזירות, מנא ליה?

The Talmud asks: And according to the one who says that the Torah spoke in the language of men and therefore nothing can be derived from the phrase “to utter a vow [lindor neder],” and he expounds the phrase “the vow of a nazirite to consecrate himself [nazir lehazir]” to render intimations of nazirite vows like nazirite vows, from where does he derive that a term of naziriteship takes effect upon a previously accepted term of naziriteship? This works out well if he holds in accordance with the one who says that a term of naziriteship does not take effect upon a previously accepted term of naziriteship; however, if he holds in accordance with the one who says that a term of naziriteship takes effect upon a previously accepted term of naziriteship, from where does he derive this halakha?

נימא קרא ״ליזור״, מאי ״להזיר״ שמעת מינה תרתי.

The Talmud answers: Let the verse say: To consecrate himself [lizor]. What is the reason the verse expressed this same idea with the word lehazir? Learn two halakhot from this: That intimations of nazirite vows are considered nazirite vows, and that a term of naziriteship takes effect upon a previously accepted term of naziriteship.

במערבא אמרי: אית תנא דמפיק ליה לידות מן ״לנדר נדר״, ואית תנא דמפיק ליה, מן ״ככל היצא מפיו יעשה״.

The Talmud adds: In the West, Eretz Yisrael, they say: There is a tanna who derives intimations of vows from the phrase “to utter a vow [lindor neder],” as he holds that the Torah did not speak in the language of men. And conversely, there is a tanna who holds that the Torah spoke in the language of men, and therefore derives this halakha of intimations from the verse: “He should do according to all that proceeds out of his mouth” (Numbers 30:3). The inclusive formulation of this verse comes to include intimations of vows.