II Samuel 14:4, 22

And when the woman of Tekoa spoke to the king, she fell on her face to the ground and prostrated herself, and said, “Help, O king!”

Then Joab fell to the ground on his face and bowed himself, and thanked the king. And Joab said, “Today your servant knows that I have found favor in your sight, my lord, O king, in that the king has fulfilled the request of his servant.”