According to Halacha, how big of a cut on an animal’s skin is necessary to render it non kosher (treif)? Not depth, but width/length wise, what is the shiur for it to become prohibited? Is this discussed in the Talmud?


1 Answer 1


There are eight signs that can render an animal treif (see e.g., here) and put an animal on the verge of death. Some of them have to do with external cuts, and they each come with specific characteristics, e.g.,

  • derusa which applies to certain animals (e.g., a lion, wolf, eagle, cat) attacking certain animals (e.g., large domesticated animals, lamb, fowl) but not in all combinations. When attacked we need to check the entire animal for signs of tereifa. The signs of tereifa start when the flesh turns red, in which case even the slightest wound is significant (see MT Hilchot Schechitah chapter 5 at length for details)
  • nekuva which is a perforation of the slightest size that reaches the inner cavity of 11 key organs: the entrance to the gullet, the membrane of the brain in the skull, the heart and its large arteries, the gall-bladder, the arteries leading to the liver, the maw, the stomach, the abdomen, the gut, the intestines, and the lung and the bronchia (see MT Hilchot Schechitah chapter 6 at length for details)

These laws are also covered by SA YD 55 and following, and find their sources in the gemara Chulin.

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