Our Rabbis taught: If a woman was in protracted labour for three days, but the embryo was born by way of a caesarean cut, she is to be regarded as having given birth in zibah. R. Simeon, however, ruled: A woman in such circumstances is not regarded as having given birth in zibah. The blood, furthermore, that issues from that place is unclean, but R. Simeon declared it clean. The first clause may be well understood, since R. Simeon follows his known view and the Rabbis follow theirs; on what principle, however, do they differ in the final clause? — Rabina replied: This is a case where, for instance, the embryo was born through the side