Reference for Nedarim 140:9
איבעית אימא בוגרת דוקא ואיידי דנסיב רישא בזה נסיב סיפא נמי בזה
Again, if he betrothed her as a bogereth, surely that has already been taught once, viz., A bogereth who tarried twelve months?<span class="x" onmousemove="('comment',' V. infra 73b; there it is seen that the arus can annul the vows of a bogereth. ');"><sup>9</sup></span> (Now this is self-contradictory. You say, 'a bogereth who tarried twelve months': in the case of a bogereth, why twelve months? thirty days are sufficient?<span class="x" onmousemove="('comment',' V. p. 216, n. 1; in the case of a na'arah the interval between kiddushin (erusin) and nissu'in might not be more than twelve months; in the case of a bogereth, not more than thirty days. After that, even if the nissu'in were not celebrated, the arus is responsible for her maintenance, though she is still in her father's house. ');"><sup>10</sup></span> — Read: A bogereth and one [viz., a na'arah] who tarried twelve months.) But still the difficulty remains?<span class="x" onmousemove="('comment',' Viz., that we know from elsewhere that the arus can annul the vows of a bogereth. ');"><sup>11</sup></span> — I can answer either that here it is specifically taught, whilst there bogereth is mentioned because it is desired to state the controversy between R. Eliezer and the Rabbis. Or, alternatively, bogereth [there] is specifically taught; but [here], because the first clause states 'IN THIS RESPECT etc.,' a second [contrary] clause IN THIS RESPECT, is added.<span class="x" onmousemove="('comment',' Though really unnecessary here. ');"><sup>12</sup></span>