Reference for Ketubot 202:11
רב הונא מתני' אטעיתיה הוא סבר מדקא מפליג באילונית ולא קמפליג באלמנה מכלל דאלמנה אפי' בסתמא נמי אית לה ולא היא כי קתני לה לאלמנה אפלוגתא דאילונית קאי:
It was our Mishnah that caused R. Huna to err. He thought that, since a distinction was drawn in the case of an aylonit and no distinction was drawn in the case of a widow, it can be inferred that a widow is entitled [to a ketubah even if she was married] with no presumption of her status. But this is not so, for when it taught the case of a widow the author intended to apply to it the distinction drawn in the case of the aylonit.
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