Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))

Bukhari :: Book 6 :: Volume 60 :: Hadith 459

Narrated Aisha:

The Prophet said, "Such a person as recites the Quran and masters it by heart, will be with the noble righteous scribes (in Heaven). And such a person exerts himself to learn the Quran by heart, and recites it with great difficulty, will have a double reward."