Numbers 30:7

If she is [married] to a man. This refers to an “arusah.” But perhaps to a “nesuah?” When it says, “and if she took the vow in her husband’s home,” a “nesuah” is mentioned, so this must mean an “arusah.” It is intended to distinguish her, in that her father and her husband annul her vow. If the father annulled, but not the husband, or the husband, but not the father, there is no annulment, and it goes without saying, if one of them endorsed it.

And her vows were upon herself. She took the vows in her father’s home, but her father did not hear them — they were neither annulled nor endorsed.

And if when she hath been taken by a husband a vow be upon her, or her lips have expressed that which is binding upon her soul while in her father's house, and her father had not absolved her while unmarried, then, when she hath been married, it shall be confirmed.

AND IF SHE WERE AT ALL [BETROTHED] TO A MAN, AND THERE ARE VOWS UPON HER. In the opinion of our Rabbis 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 youth — 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, signifying that he also joins [now] with the father in annulling her vows [that are upon her].”