Virtues of the Qur'an

Bukhari :: Book 6 :: Volume 61 :: Hadith 558

Narrated Aisha:

Allah's Apostle heard a man reciting the Qur'an at night, and said, "May Allah bestow His Mercy on him, as he has reminded me of such-and-such Verses of such-and-such Suras, which I was caused to forget."