(Mishnah): [If a man did not annul due to a mistake, e.g.] his wife vowed, and he thought that his daughter vowed, or his daughter vowed, and he thought that his wife vowed....

[Or] she vowed to be a Nezirah, and he thought that she vowed to bring a Korban, or she vowed to bring a Korban, and he thought that she vowed to be a Nezirah;

[Or] she vowed from figs, and he thought that she vowed from grapes, or she vowed from grapes, and he thought that she vowed from figs. [In all these cases,] he can return to annul.

(Gemara): This is even if he heard and was silent [that day], and even if he heard and affirmed it.