Reference for Nedarim 143:1-144:99:5

הב"ע בשלא שמע ארוס ראשון אי הכי מאי איריא בו ביום אפילו לאחר מאה ימים נמי

— No. This refers to a case where the first arus did not hear thereof. If so, why particularly state ON THE SAME DAY? The same holds good even after a hundred days! — This refers to a case where the arus did not hear thereof, but her father did; so that he can annul only on the same day, but not afterwards.

Jastrow