Nedarim 11:6-7

Nedarim 11:6

If a woman says, “Konam that I don’t taste figs or grapes” and her husband upholds the part about figs, the entire vow is upheld. If he voided the part about figs, the vow is not overturned until he also voids the part about grapes. If she said, “Konam that I don’t taste figs and that I don’t taste grapes,” that counts as two vows (and they can be voided independently).

Nedarim 11:7

If a man knows that his wife and daughter may take vows but he doesn’t know that he has the ability to void them, he may do so on the day he finds this out. If he knows that he has the ability to void a vow but isn’t aware that his wife or daughter’s vow needs to be voided, Rabbi Meir says he cannot void it on the day he finds this out but the Sages say that he can.