Reference for Niddah 65:49

פולטת שכבת זרע מהו שתסתור בזיבה

Another explanation: She includes the day on which her discharge ceases<span class="x" onmousemove="('comment',' Sc. the third day of three consecutive days (after the termination of her period of menstruation) on each of which she experienced a discharge and in consequence of which, she is a confirmed zabah. ');">³⁹</span>

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