be called no more Jacob, but Israel," the Tanna Devei Eliyahu taught that one should read "Israel" as , "a man who sees God," for all of Jacob's actions were directed to God. Reading , "Yea, he strove with an angel, and prevailed; he wept, and made supplication to him," the Gemara commented that this verse did not make clear who prevailed over whom. But , "For you have striven with God and with men and have prevailed," made clear that Jacob mastered the angel. , "He wept and made supplication to him," does not make clear who wept to whom. But the angel's words in , "And he said: 'Let me go,'" made clear that the angel wept to Jacob. Reading , "For you have striven with God and with men," Rabbah taught that the angel intimated to Jacob that two princes were destined to come from him: the Exilarch in Babylon and the Prince in the Land of Israel. The angel thus hinted to Jacob of the coming exile of the Jewish people. Chapter 7 of Tractate Chullin in the Mishnah, Tosefta, and Babylonian Talmud interpreted the laws of the prohibition of the sinew of the hip (the sciatic nerve, ) in . The Mishnah taught that the prohibition against eating the sciatic nerve in is in force both within the Land of Israel and outside it, both during the existence of the Temple and after it, and with respect to both consecrated and unconsecrated animals. It applies to both domesticated and wild animals, and to both the right and the left hip. But it does not apply to birds, because they have no spoon-shaped hip as the muscles upon the hip bone (femur) of a bird lie flat and are not raised and convex like those of cattle. It also applies to a live fetus found in a slaughtered animal, although Rabbi Judah said that it does not apply to a fetus. And the live fetus' fat is permitted. Rabbi Meir taught that one should not trust butchers to remove the sciatic nerve, but the Sages taught that one may trust butchers to remove the sciatic nerve as well as the fat that and forbids. A Midrash interpreted Psalm , "The Lord lets loose the prisoners," to read, "The Lord permits the forbidden," and thus to teach that what God forbade in one case, God permitted in