Indeed, We sent the Qur'an down during the Night of Decree.  

إِنَّا أَنْزَلْنَاهُ فِي لَيْلَةِ الْقَدْرِ  

And what can make you know what is the Night of Decree?  

وَمَا أَدْرَاكَ مَا لَيْلَةُ الْقَدْرِ  

The Night of Decree is better than a thousand months.  

لَيْلَةُ الْقَدْرِ خَيْرٌ مِنْ أَلْفِ شَهْرٍ  

The angels and the Spirit descend therein by permission of their Lord for every matter.  

تَنَزَّلُ الْمَلَائِكَةُ وَالرُّوحُ فِيهَا بِإِذْنِ رَبِّهِمْ مِنْ كُلِّ أَمْرٍ  

Peace it is until the emergence of dawn.  

سَلَامٌ هِيَ حَتَّىٰ مَطْلَعِ الْفَجْرِ