Indeed, We sent it [i.e., the Quran] down during the Night of Decree (1) And what can make you know what is the Night of Decree ? (2) The Night of Decree is better than a thousand months (3) The angels and the Spirit [i.e., Gabriel] descend therein by permission of their Lord for every matter (4) Peace it is until the emergence of dawn (5)

Quran ( 97 )