Hazrat Abu Hurairah R.A narrated that Prophet P.B.U.H said: “Learn the Quran and recite it, because the example of one who learns the Quran, reads it and recites it in Tahajjud is like an open bag full of musk, the fragrance where of spreads over the entire place, and a person who has learnt the Quran but sleeps while the Quran is in his heart, is like a bag full of musk but with its mouth closed.” [Tirmizi, Nasai]