Reference for Chullin 139:49

תיקו

or if what was gone was more than what was left but the young passed through that part that was left of it?<span class="x" onmousemove="('comment',' In each case the young was located in the forepart of the womb which constitutes but the smaller part of the womb; in the first case, however, only the forepart was gone but the rest remained intact, whereas in the second case only the forepart remained intact but the rest was gone.');">²²</span>

Jastrow

Jastrow