If the father nullified her vow and the husband did not nullify it, or if the husband nullified it and the father did not nullify it, then the vow is not nullified. And needless to say, it is not nullified if one of them ratified the vow.

GEMARA: The mishna states that if the father nullified her vow and the husband did not nullify it, or if the husband nullified it and the father did not nullify it, then the vow is not nullified. The Gemara asks: Is this not the same as the first clause of the mishna, which states: Her father and her husband nullify her vows? The Gemara answers: The second clause is necessary, lest you say: The mishna is teaching that either her father or her husband can nullify her vows, but there is no need for both of them to do so, which is also a possible interpretation of the Hebrew phrase used. Therefore, the mishna teaches us that it means that both of them must nullify the vow.

At the end of the mishna it is stated: And needless to say, it is not nullified if one of them ratified the vow. The Gemara asks: Why do I need the mishna to teach this? Now, it was stated that if one of them nullified the vow without the other, it is nothing, her vow is not nullified. If one of them ratified it, why do I need it to state that her vow is not nullified? Is it necessary to teach this?

The Gemara answers: It was necessary for the mishna to mention this in a case where one of them nullified the vow and the other one ratified it, and the one who ratified the woman’s vow retracted and requested dissolution of his ratification from a halakhic authority, who dissolved it. Lest you say: That which he ratified is what he uprooted, by asking the halakhic authority to dissolve his ratification, and therefore the vow is no more, the mishna teaches us that they both must nullify it together.

§ The mishna teaches: And with regard to a betrothed young woman, her father and her husband nullify her vows. The Gemara asks: From where do we derive this halakha? Since she is still in her father’s house, he should be authorized to nullify her vows by himself. Rabba said: The verse states: “And if she be to a husband, and her vows are upon her…But if her husband disallows her on the day that he hears it” (Numbers 30:7–9). From here can be derived with regard to a betrothed young woman that her father and her husband nullify her vows. The Gemara asks: Is it not possible to say that this verse is written with regard to a married woman?

The Gemara answers: No, if you say that it is written due to a need to teach the halakha of a married woman, it cannot be, as a different verse is written for that purpose: “And if a woman vowed in her husband’s house” (Numbers 30:11). The earlier verses therefore refer to a betrothed young woman, who is not yet in her husband’s house. The Gemara suggests: Say that both sets of verses are written with regard to a married woman. And if you would say: Why do I need two verses written with regard to a married woman? It is to say that the husband cannot nullify earlier vows made before her marriage but only those made “in her husband’s house.”