Nazir 19B

אמר רבא: מאי טעמא דרבי אליעזר? אמר קרא: ״כי טמא נזרו״⁠ — משום דבטומאה נזר.

Rava said: What is the reason for the opinion of R' Eliezer, according to Ulla’s explanation? The verse states: “But the first days should be void because his consecration was ritually impure” (Numbers 6:12), which he explains as follows: Why are his first days rendered void? They are void because he took a vow of naziriteship, consecrating himself, when he was in a state of ritual impurity.

איתיביה אביי: ״הריני נזיר מאה יום״, ונטמא בתחלת מאה, יכול יהא סותר, תלמוד לומר: ״והימים הראשונים יפלו״⁠ — עד שיהו לו ימים ראשונים, וזה אין לו ראשונים.

Abaye raised an objection to Rava from a baraita that is not in accordance with the opinion of Ulla: One who said: I am hereby a nazirite for 100 days, and he became ritually impure immediately, at the beginning of the 100 days, one might have thought it should negate the time he spent as a nazirite. The verse therefore states: “But the first days should be void” (Numbers 6:12), which indicates that this halakha does not apply until he will have “first days” as a nazirite, and in this case the nazirite does not have his first days completed, as he became ritually impure right away.

נטמא בסוף מאה, יכול יהא סותר, תלמוד לומר: ״והימים הראשונים יפלו״⁠ — מכלל דאיכא אחרונים, וזה אין לו אחרונים. נטמא ביום מאה חסר אחת, יכול לא יהא סותר, תלמוד לומר: ״והימים הראשונים יפלו״⁠ — מכלל דאיכא אחרונים, וזה יש לו ראשונים ואחרונים.

The baraita continues: If one became ritually impure at the end of 100 days, that is, on the hundredth day, one might have thought it should negate the days he had counted. The verse therefore states: “But the first days should be void,” indicating by inference that there are other days that can be called the last ones, while this nazirite does not have last days, as he has already completed the tally of his naziriteship. If he became impure on the one hundredth day less one, one might have thought it should not negate the days he had counted. Therefore, the verse states: “But the first days should be void,” indicating by inference that there are last ones, and this nazirite has first ones and last ones.