Reference for Niddah 46:6

ואי ס"ד דחיי הבא אחריו בכור לנחלה מי הוי

Now if one could imagine that such an abortion is viable, would the son born after it be regarded as the firstborn in regard to inheritance?<span class="x" onmousemove="('comment',' Of course not. Since, however, he is so regarded in respect of inheritance it is obvious that an abortion of the nature described is not viable. ');">⁶</span>

Jastrow

Jastrow

Jastrow