Reference for Niddah 73:35

איבעיא להו

'of her issue' but not of her childbirth.<span class="x" onmousemove="('comment',' As soon as she is free from her zibah she begins to count the seven days and need not wait until the unclean days of childbirth had passed. It is thus obvious that a birth during the days of zibah does not render void the previous counting and that the days following birth are included in the counting. ');">²⁹</span>

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