Musnad Ahmad 33:784

'Affan narrated to us, 'Abd al-'Aziz ibn Muslim narrated to us, Sulayman al-A'mash narrated to us, from Abu Salih, from Abu Hurayrah, and from Abu Sufyan, from Jabir ibn 'Abd Allah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Follow the right course and draw near [to perfection], for none of you will be saved by his deeds." We said: "Not even you, O Messenger of Allah?" He said: "Not even me, unless Allah covers me with mercy from Him."