Reference for Niddah 79:23

יכול תביא על לידה ועל זיבה כאחת

is unclean by reason of childbirth.<span class="x" onmousemove="('comment',' The Rabbis, however, require no text for this ruling since in their opinion (cf. supra 26a) the presence of the placenta alone is a sufficient cause of uncleanness. ');">²²</span>

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