Genesis 32:29-33

And Jacob asked him and said, “Please tell me your name.” But he said, “Why is it that you ask my name?” And he blessed him there.

So Jacob named the place Peniel, for he said, “I have seen God face to face, yet my life has been spared.”

Now the sun rose upon him just as he crossed over Penuel, and he was limping on his hip.

Therefore, to this day the sons of Israel do not eat the tendon of the hip which is on the socket of the hip, because he touched the socket of Jacob’s hip in the tendon of the hip.