Reference for Niddah 141:11

בית שמאי אומרים [וכו']

'Beth Shammai stated: All men die as zabs and Beth Hillel stated: No dying man is deemed to be a <i>zab</i> unless he died when he was actually one', why<span class="x" onmousemove="('comment',' According to Beth Shammai, if in their opinion the discharge is due to the fright of the angel of death. ');">⁹</span>

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