Study Chullin folio 76B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
Mar bar Rav Ashi said: Once the sinews begin to be translucent, even if they are not actually white, they are considered part of the convergence of sinews.
§ With regard to the removal of the convergence of sinews in the thigh, which renders the animal a tereifa, Ameimar says in the name of Rav Zevid: There are 3 strands, i.e., sinews; one is thick and the other two are thin. If the thick sinew was severed, a majority of the structure of the converge
The Talmud comments: All this applies to animals, whereas with regard to birds, there are 16 strands; if even one of them is severed, it is a tereifa. Mar bar Rav Ashi said: I was standing before father, i.e., Rav Ashi, and they brought before him a bird, and he examined it to see if it was a tere
The Talmud returns to the issue of the convergence of sinews in an animal. Rav Yehuda says that Rav says: The convergence of sinews in the thigh of which the rabbis spoke, stating that if it is severed the animal is a tereifa, is referring to the severing of the majority of it. Rav Yehuda added: W
The Talmud infers from Shmuel’s statement: The reason the animal is not a tereifa is only that there are two remaining, from which it may be inferred that if there are not two remaining it is not kosher, despite the fact that the other sinew is intact. The Talmud notes: And according to this version