Musnad Abu Ya'la al-Mawsili 243:58

Surayj ibn Yunus narrated to us, Khalid ibn Nafi' narrated to us, Sa'id ibn Abi Burdah narrated to us, from Abi Burdah, from Abu Musa: That the Prophet (peace and blessings of Allah be upon him) and 'Aishah passed by Abu Musa while he was reciting in his house. They stood listening to his recitation, then they departed. When it became morning, the Messenger of Allah (peace and blessings of Allah be upon him) met Abu Musa and said, "O Abu Musa, I passed by you last night while 'Aishah was with me, and you were reciting in your house, so we stood and listened." Abu Musa said to him, "Had I known, O Messenger of Allah, I would have embellished it for you with embellishment."