Genesis 32:30-32

Thomson(i) 30 And Jacob called the name of that place, Face of God: for I have seen God face to face and my life is preserved. 31 Now the sun was risen when he departed from Face of God: and he limped with his thigh. 32 For this cause even to this day the children of Israel do not eat the sinew which is in the hollow of the thigh which was numbed; for he had touched the hollow of Jacob's thigh on the sinew and it was numbed.