Musnad Ahmad 30:1368

Yunus narrated to us, Laith narrated to us, Sa'id narrated to me, from his brother 'Abbad ibn Abi Sa'id, that he heard Abu Hurairah saying: The Messenger of Allah, peace and blessings of Allah be upon him, used to say: "O Allah, I seek refuge in You from four: from knowledge that does not benefit, from a heart that does not humble itself, from a soul that is never satisfied, and from a supplication that is not heard."