Study Niddah folio 10A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
The Talmud asks: What is the halakha if she then sees menstrual blood at regular intervals of 30-day cycles? Is her time sufficient, or does she transmit impurity retroactively? Rav Giddel says that Rav says: With regard to the first time and the second time that she sees menstrual blood, her time
The baraita further teaches, with regard to a young girl who did not experience bleeding for 3 typical cycles and then saw blood, and 3 further expected menstrual cycles passed without her experiencing bleeding and then afterward she saw menstrual blood, that her time is sufficient. The Talmud ask
The Talmud answers: Rav Kahana says that Rav Giddel says that Rav says: The first time that she sees menstrual blood, her time is sufficient. After the second time, she transmits impurity retroactively for a twenty-four-hour period or from examination to examination.
The Talmud asks: Who is the tanna of the baraita? The Talmud answers: Since the baraita teaches that she attains the status of a regular adult woman upon the third sighting of menstrual blood, apparently it is R' Yehuda HaNasi, who said that presumption is established by two occasions.
The Talmud raises a difficulty: Say the latter clause: If she then passed 3 expected menstrual cycles without experiencing bleeding, and then she saw menstrual blood, she returns to the status of a young girl and her time is sufficient. In this ruling we come to the opinion of R' Eliezer, who hol