[With respect to] an animal having a difficult labor, [if] the fetus sticks its head out [of the uterus] and then brought it back [inside the uterus], and afterwards [the butcher] slaughtered [the mother], or [if] he slaughtered her and afterwards the fetus puts [its head] back in, it is forbidden [to eat the fetus without a separate slaughter]. [If] he cut it off and afterwards he slaughtered [the mother], she is permitted for eating and the fetus is forbidden. [If the fetus] stuck out its head or the majority [of its body] and then put it back in, behold, it is like a newborn calf. [If the fetus] stuck out its foreleg and he cut it off, and afterwards he slaughtered [the mother], that which emerged [before the slaughter] is forbidden, and that which [remained] inside is permitted. [There is] a stringency regarding limbs that there is not regarding fetuses, and [a stringency regarding] fetuses that there is not regarding limbs. [The stringency regarding limbs is that] where the fetus sticks out its head and brings it back inside, it is forbidden [to eat the fetus without a separate slaughter], but if it sticks out its foreleg and brings it back inside, it is permitted. The stringency regarding limbs is that one who cuts up the fetus inside its mother's womb, [the pieces] are permitted to eat, but the spleen and kidneys are forbidden. An animal with a difficult labor: [If] the fetus stuck out its foreleg and put it back inside, and afterwards [the butcher] slaughtered [the mother], what it stuck out is forbidden and what remains inside is permitted. "The meat imparts the impurity of that which has touched a carcass," the words of Rabbi Meir. And the Sages say, "[It is like that which has] touched tereifah." Rabbi Meir said to them, "What would render this fetus [ritually] pure from [the impurity of] touch?" They said to him, "The slaughter of his mother purifies him." He said to them, "If the slaughter of his mother purifies him from the impurity of touch, does it not render him pure (i.e., fit) for us to eat?" They said to him, "A tereifah may be purified from the impurity imparted by touching, but may not be purified [to render it fit] to eat." Rabbi Meir said to them, "No. If slaughter purifies her (i.e., the mother) as to something that is [part of] her body, would it [also] purify the fetus, which is not [part of] her body?" They said to him, "We have found that the power to save [from impurity] is greater as to something that is not part of one's body, than [that which is part of] one's body." One who cuts up a fetus inside the womb of its mother: [The cut-up fetus] is permitted for eating, [but what is cut] from the spleen or from the kidneys is forbidden for eating.

One who slaughters an animal and finds inside it a living nine-month fetus, [the fetus] requires [ritual] slaughter, and it is liable for the gifts [of the shankbone, cheeks, and maw to the Kohen (Deut. 18:3)], and is forbidden under the laws of "it and its offspring you shall not slaughter in a single day" (Lev. 22:28), the words of Rabbi Meir. And the Sages say, It is not forbidden under the laws of "it and its young," as it says, "It and its young you shall not slaughter in a single day." That which requires slaughter is forbidden under the laws of "it and its young," but that which does not require slaughter is permitted under the laws of "it and its young," and exempt from the [priestly] gifts, as it says (Deut. 18:3), "from those that sacrifice the sacrifices." [Only] that which requires [ritual] sacrifice is liable in the [priestly] gifts. Rabbi Shimon Shezuri says, even if it is standing and ploughing over a furrow, one may tear it open and pour out its blood, cut it, and eat its flesh! Rabbi Shimon ben Elazar says in the name of Rabbi Yosei HaG'lili, [such an animal carries] the impurity of food-impurity, and imparts the impurity of food-impurity, and must be rendered fit [for eating]. Rebbi says, it does not impart the impurity of food-impurity because it is alive, and a living creature cannot impart the impurity of food-impurity.

An animal that died, and he tore her open and found inside her a living nine-month old fetus, [that fetus] requires [ritual] slaughter, and he is liable in the [priestly] gifts, but it is disqualified from being placed on the altar because it is a ben pekuah." is omitted in MS Vienna. One who slaughters a tereifah and found in it a live nine-month old fetus, it requires slaughter and is liable in the [priestly] gifts, and if it is dead it is pure from the impurity of carrying because the slaughter of its mother purified it. One who slaughters a sin-offering and found inside her a live four-month old fetus, even after three [days], and even if it went "outside the curtains", it is is permitted to eat. If an animal in its first pregnancy miscarried the amniotic sac, it should be thrown to the dogs, but if [the fetus] had been consecrated, [the amniotic sac belonging to the miscarried fetus] must be buried, because its growth was consecrated. The amniotic sac does not disqualify [an otherwise valid] sacrifice, whether [it is eaten] outside the designated time or outside the designated area, nor can the thoughts [of the priest] render it disqualified, and one who offers it outside the Temple courtyard is exempt.