Sayyiduna Utbah bin Abd (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "If a man were dragged on his face from the day he was born until he died of old age, seeking the pleasure of Allah, he would still regard it (that deed of his) as insignificant on the Day of Resurrection."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14375