Commentary for Arakhin 15:9

הא קמשמע לן

<big><b>GEMARA: </b></big>Our Rabbis taught: If a woman astray in her reckoning said: 'I saw uncleanness for one day' then her re-count begins after seventeen days;<span class="x" onmousemove="('comment',' If the flow of blood had lasted for only one day, followed by seventeen days free from any flow, then any new flow signifies the commencement of her days of niddah. For the day on which she had the flow concerning which she was astray fell either into her period of zibah or into that of niddah. If that day was one, or even the first one, of her days of zibah then the days of her niddah would have commenced no later than on the tenth day after the flow; and her flow on the eighteenth day renders her a niddah. If, however, the day on which she had that flow, concerning which she was astray, should have been one of her yeme niddah, then having become niddah on that day (after her bath of purification which terminated her uncleanness) she remains in the state of niddah for six more days, becomes a zabah for the eleven days following, to enter her period of niddah thereupon, eleven days later, which is on the eighteenth day or any day following it.');">⁴</span>

Explore commentary for Arakhin 15:9. In-depth commentary and analysis from classical Jewish sources.