Study Chullin folio 56B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
by dragging a wheat straw over the membrane to see if it would catch on a perforation.
Rav Sheizvi said: Our geese are considered like water birds. If the skull of a goose is broken, even if the membrane is not perforated, it is a tereifa.
§ The Mishnah states: In a case where a bird fell into the fire and its innards were singed, if they turned green the bird is a tereifa; if they are red the bird is kosher. R' Yoḥanan says in the name of R' Yosei ben Yehoshua: The measure of their turning green is like the measure of their perforati
Rav Yosef, son of R' Yehoshua ben Levi, asked R' Yehoshua ben Levi: If a liver turned green on the side facing the intestines, what is the halakha? R' Yehoshua ben Levi said to him: The bird is a tereifa. Rav Yosef said to him: But this halakha should be no more stringent than that of a case where
The Talmud recounts: R' Yehoshua ben Levi had a certain hen that fell into the fire. After it was slaughtered, he sent it before the distinguished R' Elazar HaKappar and said to him: Its innards were green, and R' Elazar HaKappar deemed it kosher. R' Yehoshua ben Levi asked: But didn’t we learn in