Musnad Ahmad 962:135

Abu Ahmad al-Zubayri narrated to us, Aban—meaning Ibn Abdullah—narrated to us, Abu Muslim narrated to us, he said: I entered upon Abu Umamah while he was picking lice in the mosque and burying the lice in the pebbles. I said to him: "O Abu Umamah, a man narrated to me on your authority that you said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: 'Whoever performs wudu and perfects the wudu: he washes his hands, his face, and wipes his head and his ears, then stands for the obligatory prayer, Allah will forgive him for that day what his feet walked toward, what his hands grasped, what his ears listened to, what his eyes looked at, and what his soul whispered to him of evil.'" He said: "By Allah, I have heard it from the Prophet of Allah, peace and blessings of Allah be upon him, more times than I can count."