Liturgy for Niddah 145:38

עלך אמר קרא (ויקרא טו, כה) על נדתה סמוך לנדתה סמוך לנדתה אימת הוי

implying that only she conveys uncleanness to the man who had intercourse with her but that a <i>zab</i> does not convey uncleanness to the woman with whom he had intercourse. But whence is it deduced that he conveys uncleanness to couch and seat? It was expressly stated, As the bed of her menstruation.<span class="x" onmousemove="('comment',' Lev. XV, 16. ');">³¹</span>

Hadran