Reference for Niddah 145:34

לר"ע קראי לר' אלעזר בן עזריה הלכתא

implies that only she conveys uncleanness to the man who had intercourse with her but that the <i>zab</i> conveys no uncleanness to the woman with whom he had intercourse. But is there not an argument [a minori ad majus]: If she, who does not contract uncleanness on account of observation<span class="x" onmousemove="('comment',' If, e.g., she experienced three discharges on one day she is not regarded as a major zabah (v. foll. n.) to incur the obligation of a sacrifice. ');">²⁸</span>

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