וְ֠אִם בְּי֨וֹם שְׁמֹ֣עַ אִישָׁהּ֮ יָנִ֣יא אוֹתָהּ֒ וְהֵפֵ֗ר אֶת־נִדְרָהּ֙ אֲשֶׁ֣ר עָלֶ֔יהָ וְאֵת֙ מִבְטָ֣א שְׂפָתֶ֔יהָ אֲשֶׁ֥ר אָסְרָ֖ה עַל־נַפְשָׁ֑הּ וַיהוָ֖ה יִֽסְלַֽח־לָֽהּ׃
그러나 그 남편이 그것을 듣는 날에 허락지 아니하면 그 서원과 마음을 제어하려고 경솔히 입술에서 발한 서약이 무효될 것이니 여호와께서 그 여자를 사하시리라
Ramban
AND IF SHE WERE AT ALL [BETROTHED] TO A MAN, AND THERE ARE VOWS UPON HER. In the opinion of our Rabbis45Nedarim 71a. Scripture [here] is saying: “and if she, this woman [mentioned above in Verses 4-6] were at all [betrothed] to a man, and bound herself by a bond, being in her father’s house, in her youth46Verse 4. — and there are vows upon her, meaning that her father had not heard them, so that they were neither annulled nor confirmed, and her [betrothed] husband hears them as well [as her father who hears them now when she is betrothed], then he makes void her vow,47Verse 9. signifying that he also joins [now] with the father in annulling her vows [that are upon her].”
Bartenura
הפרת נדרים – as the Torah stated (Numbers 30:9): “But if her husband restrains her on the day that he learns of it, [he thereby annuls her vow which was in force or the commitment to which she bound herself.”
English Explanation of Mishnah Nedarim
“But every vow of a widow and of a divorcee… shall be binding upon her” (Numbers 30:9).
How is this so? If she said, “Behold, I will be a nazirite after thirty days”, even if she married within the thirty days, he cannot annul it. In this case the woman vowed before she was married but vowed in such a way that the vow would not begin to take effect for another thirty days. During the thirty days before the vow takes effect, she was married. Although the vow begins to take effect when she is already married, her husband cannot annul it because she made the vow before she was married.
How is this so? If she said, “Behold, I will be a nazirite after thirty days”, even if she married within the thirty days, he cannot annul it. In this case the woman vowed before she was married but vowed in such a way that the vow would not begin to take effect for another thirty days. During the thirty days before the vow takes effect, she was married. Although the vow begins to take effect when she is already married, her husband cannot annul it because she made the vow before she was married.