Genesis 32:33
Therefore the children of Israel will by no means eat of the sinew which was benumbed, which is on the broad part of the thigh, until this day, because the angel touched the broad part of the thigh of Jacob— even the sinew which was benumbed.
Updated Brenton Septuagint
In Context
32And the sun rose upon him, when he passed the Face of God; and he halted upon his thigh.