Sahih Bukhari: Hadith 2557

The Prophet (ﷺ) heard a man (reciting Qur'an) in the Mosque, and he said, "May Allah bestow His Mercy upon him. No doubt, he made me remember such-and such Verses of such-and-such Sura which I dropped (from my memory). Narrated Aisha: The Prophet (ﷺ) performed the Tahajjud prayer in my house, and then he heard the voice of `Abbad who was praying in the Mosque, and said, "O `Aisha! Is this `Abbad's voice?" I said, "Yes." He said, "O Allah! Be merciful to `Abbad!"