Musnad Abu Ya'la al-Mawsili 155:74

Abu Bakr ibn Abi Shaybah narrated to us, Muhammad ibn Bishr narrated to us, from Muhammad ibn ‘Amr, from Abu Salamah, from Abu Hurayrah, who said: A man said, "O Messenger of Allah, we find in ourselves things that we would not like to speak of, even if we were to have what the sun rises upon." He said, "Have you indeed found that?" They said, "Yes." He said, "That is clear faith."