What did the Prophet Muhammad (saw) reveal to the Jinns when they heard the recitation of the Qur'an?
 Narrated Ibn `Abbas:                     Allah's Apostle went out along with a group of his companions towards `Ukaz Market. At that time something intervened between the devils and the news of the Heaven, and flames were sent down upon them, so the devils returned. Their fellow-devils said, "What is wrong with you? " They said, "Something has intervened between us and the news of the Heaven, and fires (flames) have been shot at us." Their fellow-devils said, "Nothing has intervened between you and the news of the Heaven, but an important event has happened. Therefore, travel all over the world, east and west, and try to find out what has happened." And so they set out and travelled all over the world, east and west, looking for that thing which intervened between them and the news of the Heaven. Those of the devils who had set out towards Tihama, went to Allah's Apostle at Nakhla (a place between Mecca and Taif) while he was on his way to `Ukaz Market. (They met him) while he was offering the Fajr prayer with his companions. When they heard the Holy Qur'an being recited (by Allah's Apostle), they listened to it and said (to each other). This is the thing which has intervened between you and the news of the Heavens." Then they returned to their people and said, "O our people! We have really heard a wonderful recital (Qur'an). It gives guidance to the right, and we have believed therein. We shall not join in worship, anybody with our Lord." (See 72.1-2) Then Allah revealed to His Prophet (Surat al- Jinn): 'Say: It has been revealed to me that a group (3 to 9) of Jinns listened (to the Qur'an).' (72.1) The statement of the Jinns was revealed to him .