Musnad Abu Ya'la al-Mawsili 4:8

Ibrahim ibn Muhammad ibn ‘Ar‘arah narrated to us, Wahb ibn Jarir narrated to us, my father narrated to us, he said: I heard Muhammad ibn Ishaq, from Muhammad ibn Ibrahim, from Abu Anas ibn Abi ‘Amir, who said: I was with Talhah ibn ‘Ubayd Allah when a man entered upon him and said: "O Abu Muhammad, we do not know if this Yemeni is more knowledgeable about the Messenger of Allah than you, or if he says about the Messenger of Allah (may Allah bless him and grant him peace) what he did not say." He (Talhah) said: "By Allah, we do not doubt that he heard from the Messenger of Allah (may Allah bless him and grant him peace) what we did not hear, and he knew what we did not know. We were wealthy people, having houses and families, and we would come to the Prophet of Allah (may Allah bless him and grant him peace) at both ends of the day, then return. He was a poor man with no wealth and no family; his hand was only with the hand of the Prophet of Allah (may Allah bless him and grant him peace), and he would revolve with him wherever he revolved. So we do not doubt that he knew what we did not know and heard what we did not hear, and we have not found anyone in whom there is goodness saying about the Messenger of Allah (may Allah bless him and grant him peace) what he did not say." He meant Abu Hurayrah.