Mesorat%20hashas for Niddah 1:2

כֵּיצַד דַּיָּהּ שְׁעָתָהּ. הָיְתָה יוֹשֶׁבֶת בַּמִּטָּה וַעֲסוּקָה בְטָהֳרוֹת, וּפֵרְשָׁה וְרָאֲתָה, הִיא טְמֵאָה וְכֻלָּן טְהוֹרוֹת. אַף עַל פִּי שֶׁאָמְרוּ, מְטַמְּאָה מֵעֵת לְעֵת, אֵינָהּ מוֹנָה אֶלָּא מִשָּׁעָה שֶׁרָאָתָה:

How is it that her hour [of discovering menstrual blood] suffices [to reckon her impurity from that moment]? If she was sitting on a bed and was occupied with handling pure things [i.e. foods or vessels], and she left and [then] saw [blood], she is impure, and they are all pure [since her impurity is reckoned only from that moment]. Even though they said [regarding a woman who does not have a regular period]: she renders items impure from that time to that time [i.e. from twenty-fours hours earlier, retroactively], she only counts [her days of menstrual impurity] from the hour she saw [blood].

Explore mesorat%20hashas for Niddah 1:2. In-depth commentary and analysis from classical Jewish sources.