Reference for Niddah 65:17

אמר רב אסי

Then why was it explicitly stated, 'And her impurity be upon him'? As it might have been presumed that he imparts no uncleanness to man or earthenware, it was explicitly stated, 'And her impurity be upon him',<span class="x" onmousemove="('comment',' Lev. XV, 24. ');">¹³</span>

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