If an animal was having difficulty giving birth and the fetus put forth a limb and then put it back in, it may be eaten [when its mother is slaughtered]. If it put forth its head, even though it put it back in, it is considered as born. Whatever is cut off from the fetus within the womb [and left inside] may be eaten, but whatever is cut off from the spleen or kidneys [of the animal and left inside] may not be eaten. This is the rule: that which is from the body of the animal is forbidden, but that which is not from the body of the animal is permitted.

If an animal giving birth for the first time was having difficulty, one may cut off each limb [as it comes out] and throw it to the dogs. If the greater portion came forth it must be buried, and she is exempt from the law of the firstling.

If a fetus died within the womb [of its mother] and the shepherd put in his hand and touched it, he is clean, whether it was a clean or unclean animal. Rabbi Yose HaGalili says: if it was an unclean animal he is unclean, and if it was a clean animal he is clean. If the fetus of a woman died within the womb of its mother and the midwife put in her hand and touched it, the midwife is unclean for seven days, but the mother is clean until the fetus comes out.

If an animal was having difficulty in labor and the fetus put forth its limb and a person immediately cut if off and then slaughtered the mother, the flesh [of the fetus] is clean. If he slaughtered the mother first and then cut if off, the flesh [of the fetus] is unclean like that which had touched nevelah, the words of Rabbi Meir. But the sages say, it is like that which had touched a slaughtered terefah, for just as we find that the slaughtering of a terefah animal renders it clean, so the slaughtering of the animal renders the limb clean. Rabbi Meir said to them: No, for when you say that the slaughtering of a terefah [animal] renders it clean you are concerned with [the animal] itself, but can you say that it will render clean the limb which is not part of [the animal] itself? From where do we learn that the slaughtering of a terefah animal renders it clean? [For we could have argued to the contrary:] An unclean animal may not be eaten, and a terefah also may not be eaten; just as slaughtering does not render an unclean animal clean so slaughtering should not render a terefah animal clean? No, if you said this of an unclean animal for at no time was it fit [for slaughtering]; can you also say this of a terefah animal which had a time when it was fit [for slaughtering]? Take away with this argument that you brought forth! For where would we know this of an animal that was born terefah from the womb? [Substitute therefore this argument]: No, if you said this of an unclean animal for none of its kind may be validly slaughtered; can you also state this of a terefah for whose kind there is valid slaughter? [Accordingly], the slaughtering of a live eight months birth does not render it clean, since there is no slaughtering of its kind.

If one slaughtered an animal and found in it an eight months’ fetus, either living or dead, or a dead nine months’ fetus, he need only tear it open and take out the blood. If he found in it a living nine months’ fetus it must be slaughtered, and he would thereby [possibly] incur the penalty for “it and its young,” the words of Rabbi Meir. But the sages say: the slaughtering of its mother renders it permitted. Rabbi Shimon Shezuri says: even if it is eight years old and is plowing the field, the slaughtering of its mother renders it permitted. If he ripped open [the mother] and found in it a living nine months’ fetus, it must be slaughtered, since its mother has not been slaughtered.

If the hind legs of an animal were cut off below the joint, it is permitted; If above the joint, it is terefah. So too if the juncture of the tendons was gone, [it is terefah]. If the bone was broken but the greater part of the flesh [around the fracture] remained, it is rendered clean by the slaughtering; otherwise it is not rendered clean by the slaughtering.