And when he saw that he prevailed not against him, he touched the hollow of his thigh; and the hollow of Yaakov's thigh was out of joint, as he wrestled with him.
Thus saith YY , the Holy One of Yisrael, and his Maker, Ask me of things to come concerning my sons, and concerning the work of My Hands Command ye me.
Therefore the children of Yisrael eat not of the sinew which shrank, which is upon the hollow of the thigh, unto this day: because he touched the hollow of Yaakov's thigh in the sinew that shrank.