It is also narrated that the prophet said: ``Rehearsing of the OPENING CHAPTER, equals the rehearsal of two third of the whole Book.''
In this relation Imam Sadiq (AS) too, has said: ``SATAN moaned painfully in four occasions:
A) When he was banished from the presence of God.
B) When he was driven out of the GARDEN OF BLISS. (PARADISE)
C) When Mohammad was assigned for his prophetic mission.
D) And when the OPENING CHAPTER OF QURÄN revealed.''