Sahih Muslim Book - 1, Hadith - 445

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ وَأَبُو كُرَيْبٍ قَالَا حَدَّثَنَا أَبُو مُعَاوِيَةَ حَدَّثَنَا الْأَعْمَشُ عَنْ عَمْرِو بْنِ مُرَّةَ عَنْ أَبِي عُبَيْدَةَ عَنْ أَبِي مُوسَى قَالَ قَامَ فِينَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِخَمْسِ كَلِمَاتٍ فَقَالَ إِنَّ اللَّهَ عَزَّ وَجَلَّ لَا يَنَامُ وَلَا يَنْبَغِي لَهُ أَنْ يَنَامَ يَخْفِضُ الْقِسْطَ وَيَرْفَعُهُ يُرْفَعُ إِلَيْهِ عَمَلُ اللَّيْلِ قَبْلَ عَمَلِ النَّهَارِ وَعَمَلُ النَّهَارِ قَبْلَ عَمَلِ اللَّيْلِ حِجَابُهُ النُّورُ وَفِي رِوَايَةِ أَبِي بَكْرٍ النَّارُ لَوْ كَشَفَهُ لَأَحْرَقَتْ سُبُحَاتُ وَجْهِهِ مَا انْتَهَى إِلَيْهِ بَصَرُهُ مِنْ خَلْقِهِ وَفِي رِوَايَةِ أَبِي بَكْرٍ عَنْ الْأَعْمَشِ وَلَمْ يَقُلْ.

It was narrated that Abu Musa said: "The Messenger of Allah (s.a.w) stood up and told us five things. He said: 'Allah, the Mighty and Sublime, does not sleep and it is not befitting that He should sleep. He lowers the Balance and raises it; the deeds of the night are taken up to Him before the deeds of the day, and the deeds of the day before the deeds of the night; His Veil is the Light'" And according to the report of (one of the narrators) Abu Bakr: (The Prophet (s.a.w) said: His veil is) 'Fire' - 'and if He were to remove it, the splendor of His Face would burn all of His creation, as far as His sight reaches."'