Sahifah Hammam ibn Munabbih

And the Messenger of Allah, peace and blessings be upon him, said: "The Children of Israel were commanded to enter the door in a state of prostration and to say (along with it), '(O Allah!) Forgive us' (so that all your sins may be forgiven), but they altered it. So instead of prostrating, they entered the door dragging themselves on their buttocks, and instead of saying «حطة», they said «حبة في شعيرة» (which means wheat)."