Genesis 32:22-25

And he rose up that night, and took his two wives, and his two womenservants, and his eleven sons, and passed over the ford Jabbok. And he took them, and sent them over the brook, and sent over that he had. And Jacob was left alone; and there wrestled a man with him until the breaking of the day. And when he saw that he prevailed not against him, he touched the hollow of his thigh; and the hollow of Jacob's thigh was out of joint, as he wrestled with him.