Reference for Niddah 52:31

בפירוש אמר רב הכי

answered, have indeed stated Rab's actual rulings, for Rab has explicitly made the following statement: If a woman aborted an embryo and after that she aborted a placenta, if this occurred within three days<span class="x" onmousemove="('comment',' After the abortion of the embryo. ');">²⁹</span>

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