Virtues of the Qur'an

Bukhari :: Book 6 :: Volume 61 :: Hadith 541

Narrated Abu Huraira: Allah's Apostle said, "Allah does not listen to a prophet as He listens to a prophet who recites the Qur'an in a pleasant tone." The companion of the sub-narrator (Abu Salama) said, "It means, reciting it aloud."