פּירוש אויף דברים 14:6

מפרסת means split, as the Targum has it.

מפרסת פרסה ושסעת שסע שתי פרסות מעלת גרה “And every beast that parteth the hoof, and hath the hoof wholly cloven in two, and cheweth the cud.” Any mammal that displays some of these identifying marks but not others are forbidden. [The Torah proceeds to name the most popular mammals kept as domestic beats, such as pigs, dogs, camels, hares and rabbits must not be eaten. The latter, including cats, must not be eaten because they have no hooves at all.]

Split. The word מפרסת is not related to the word פרסה (hoof). Otherwise, the verse regarding the camel (Vayikra 11:4) ופרסה איננו מפריס, would mean, “It does not have a hoof with which to step on the ground.” But this is not so! Therefore Rashi explains that the word מפרסת denotes being “split.” In other words, the hoof is split.

פרסה - plante in O. F. (English = hoof).

ושסעת AND HATH CLOVEN [HOOFS] — i.e. hoofs divided into two nails, for there are animals with hoofs split but not entirely divided into two nails (cf. Rashi on Leviticus 9:3), and such are unclean.

בבהמה [AND EVERY BEAST THAT PARTETH THE HOOF …] AMONG THE BEASTS [YE MAY EAT] — if one takes בבהמה to signify “within the animal”, it suggests: that which is found in the beast you may eat. From here, therefore, they (the Rabbis) derived the law that a שליל (a fully developed embryo) becomes permitted to be eaten through the slaughter of its mother without requiring ritual slaughtering itself (Chullin 69a; Chullin 74a).