Reference for Niddah 30:28

לא תימא הטילה נפל לבור אלא אימא

they pronounced him clean because weasels and martens are commonly found there.<span class="x" onmousemove="('comment',' In pits. Tosef. Oh. XVI. These creatures might be presumed to have devoured or dragged away the body so that there was no 'overshadowing' on the part of the priest. ');">²⁷</span> Now here, surely, it is a certainty that the woman had thrown a premature child into the pit and a doubt whether they had dragged it away or not, and yet does not the doubt set aside the certainty? — Do not read, 'Threw the body of a premature child into a pit' but

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