Nedarim 89B

נערה שלא בגרה והיא יתומה. בוגרת ומת אביה. נערה בוגרת ומת אביה. נערה שלא בגרה ומת אביה. נערה שמת אביה ומשמת אביה בגרה. בוגרת ואביה קיים. נערה בוגרת ואביה קיים. רבי יהודה אומר: אף המשיא בתו הקטנה ונתאלמנה או נתגרשה וחזרה אצלו ⁠— עדיין היא נערה.

if she took a vow when she was a young woman who had not yet reached her majority, and she is an orphan; if she took a vow when she was a grown woman and her father died; if she took a vow when she was a young woman, and she became a grown woman, and her father died; if she took a vow when she was a young woman who had not reached her majority, and her father died; if she took a vow when she was a young woman, and her father died, and after her father died she reached her majority; if she took a vow when she was a grown woman and her father is still alive; and if she took a vow when she was a young woman, and she became a grown woman, and her father is still alive. R' Yehuda says: With regard to even one who married off his minor daughter, and she was widowed or divorced and she returned to him, and according to her age she still is in the category of a young woman, her vows cannot be nullified.

גמ׳ אמר רב יהודה אמר רב: זו דברי רבי יהודה. אבל חכמים אומרים, שלש נערות נדריהן קיימין: בוגרת, ויתומה, ויתומה בחיי האב.

Talmud: Rav Yehuda said that Rav said: This Mishnah is the statement of R' Yehuda, who spelled out all the cases and listed 9 young women whose vows are upheld. But the Rabbis say that it is unnecessary to go into such detail. Instead, they simply said: There are 3 young women whose vows are upheld and cannot be nullified: A grown woman, and an orphan, and an orphan in her father’s lifetime, i.e., a young woman who was divorced or widowed while her father was still alive and is considered an orphan in that her father no longer has jurisdiction over her.