Volume 8 · Book 75 · Hadith 347
Narrated 'Aisha: The Prophet heard a man reciting (the Qur'an) in the mosque. He said," May Allah bestow His Mercy on him, as he made me remember such and-such Verse which I had missed in such-and-such Sura."
— Sahih Bukhari, Volume 8, Book 75: Invocations, Hadith #347