Genesis 32:24-26

Young's Literal Translation

²⁴ And Jacob is left alone, and one wrestleth with him till the ascending of the dawn;

²⁵ and he seeth that he is not able for him, and he cometh against the hollow of his thigh, and the hollow of Jacob's thigh is disjointed in his wrestling with him;

²⁶ and he saith, `Send me away, for the dawn hath ascended:' and he saith, `I send thee not away, except thou hast blessed me.'