It is Allah Who has sent down the Book (the Quran) in truth..

اللَّهُ الَّذِي أَنزَلَ الْكِتَابَ بِالْحَقِّ وَالْمِيزَانَ ۗ وَمَا يُدْرِيكَ لَعَلَّ السَّاعَةَ قَرِيبٌ

It is Allah Who has sent down the Book (the Quran) in truth, and the Balance (i.e. to act justly). And what can make you know that perhaps the Hour is close at hand?  

Quran : Surat Ash-Shuraa :  Chapter 42 : Ayah 17

 *CLICK on photo to enlarge*