Musnad Ahmad 30:2259

'Affan narrated to us, Shu'bah narrated to us, he said: Ibrahim ibn al-Muhajir informed me, he said: I heard Abu al-Sha'tha' al-Muharibi, he said: We were with Abu Hurayrah in a mosque, and a man went out after the caller to prayer had given the adhan. He said: So he said: "As for this one, he has disobeyed Abu al-Qasim, may Allah bless him and grant him peace."