Niddah 5:8 - 5:9

איזו הוא סימניה (what are her signs of puberty) – it is referring to צמל/the stage of complete puberty in a woman.

קמט – her breasts grew until they are folded a bit upon the chest and they appear as a fold.

משיטו דדיה (that her breasts hang down) – they are larger than a fold.

הפיטומת (when the surroundings of the nipple begin to grow dark) – the top of the breast, like (Tractate Sukkah, Chapter 3, Mishnah 6): ניטלה פטמתו/if the pestle-lie protuberance of an Etrog is taken out.

על העוקץ -point of the nipple that the baby sucks on. And the surroundings of the nipple which is around the point, and all of these signs of puberty when they are appear in a woman, she is an adult. The one in accordance in with the opinion he holds (i.e., for example, Rabbi Akiva) and the other in accordance with the opinion he holds (i.e., for example, Rabbi Yossi), but furthermore, the father has no authority/control over her. But the Halakha is according to the words of all of them in the strictest opinions. Therefore, it one of these signs of puberty appear on her, we judge concerning her the law of an adult woman stringently. But not for a lenient decision, that if she betrothed herself, she needs a Jewish bill of divorce for perhaps she was an adult woman. But if her father betrothed her, she also needs a Jewish bill of divorce, lest she was a young woman/נערה, until there will be in her all of these signs of puberty entirely and then she will be considered an adult woman, whether for leniency or for stringency.

והיא אילונית – meaning to say, and it is necessary that they will see I her signs of being a sexually undeveloped woman. For if signs of being a sexually undeveloped woman are not seen in her even though she is twenty-years of age and has not brought forth yet two [pubic] hairs she is still a minor, until she will be thirty-five years and one day old. But if she did not bring forth two [pubic] hairs, then, even though the signs of being an undeveloped woman have not appeared in her, this [woman] is a sexually undeveloped woman. And we explained the signs of a sexually undeveloped woman [at the beginning] of the first chapter of [Tractate] Yevamot (Mishnah 1).

לא חולצת ולא מתיבמת – and she is permitted to marry to any in the market/street, for the All-Merciful freed her, as it is written (Deuteronomy 25:6): “The first son that she bears [shall be accounted to the dead brother, that his name not be blotted out in Israel],” excluding the sexually undeveloped woman, who does not give birth.

והוא סריס – meaning to say, that there appeared in him the sins of being a eunuch/impotent. For if there hadn’t appeared in him the signs of being a eunuch, he is still a minor, until he will be thirty-five years and one day old, for then, even if there didn’t appear in him signs of being impotent, it is known/assumed that he is impotent, since he did not bring forth two [pubic] hairs. But a eunuch does not perform Halitzah, as it is written (Deuteronomy 25:7): “to establish a name in Israel for his brother,” for this one is not the offspring of this one.

רבי אליעזר אומר הזכר כדברי בית הלל – age twenty, if there appeared in him the signs of a eunuch, behold this is a eunuch/someone impotent.

והנקבה – who is eighteen years old, if there appeared in her signs of a sexually impotent woman, according to the words of the School of Shammai. But the Halakha is not according to the Rabbi Eliezer.