Reference for Niddah 42:11

וכי תימא

They thus differ on the same principle as that on which the following Tannas differ. For it was taught: If a woman was in hard labour for two days and on the third she aborted and she does not know what she had aborted, her case is one of doubtful childbirth and doubtful <i>zibah</i>, and she must, therefore, bring a sacrifice which may not be eaten. R. Joshua ruled: She must bring a sacrifice, and it may be eaten, since it is impossible for the uterus to open without some bleeding.<span class="x" onmousemove="('comment',' Cf. notes on prev. version. ');">⁵</span>

Jastrow

Jastrow