Abu Musa Ashari reported,
The Messenger of Allah ﷺ stood among us and spoke five statements. He said, "Allah 
does not sleep, nor does it befit Him to sleep. He lowers the scale and raises it. The deeds of the night are raised to Him before the deeds of the day, and the deeds of the day before the deeds of the night. His veil is light," and in another narration, "fire. Were He to remove it, the splendor of His face would burn away everything His sight reaches of His creation."
Azami 264
Sahihعن أبي موسى، قال
قام فينا رسول الله ﷺ بخمس كلمات فقال: إن الله عز وجل لا ينام ولا ينبغي له أن ينام، يخفض القسط ويرفعه، يرفع إليه عمل الليل قبل عمل النهار، وعمل النهار قبل عمل الليل، حجابه النور- وفي رواية: النار-، ولو كشفه لأحرقت سبحات وجهه ما انتهى إليه بصره من خلقه.
Muslim narrated it in the Book of Faith (179) through several routes from Abu Muawiya, who said, Amash narrated to us, from Amr bin Mura, from Abu Ubayda, from Abu Musa, and he related it.Abu Muawiya is Muhammad bin Khazim, the blind. Abu Ubayda is the son of Ibn Masud. It is said his name was Amir, and it is said he had no name.As for his saying, "He lowers the scale of justice and raises it," it has been said that he meant the balance, as Allah Almighty said, "And We set up the scales of justice" [Anbiya 21:47], meaning the scales possessing justice, which is fairness. He meant that Allah lowers the balance and raises it according to what is weighed of the deeds of His servants that are raised up to Him, and according to what is weighed of their provisions that descend from Him.It has also been said that by "qist" he meant the provision, which is the allotted share of every creature. He lowers it at times, restricting it, and raises it at times, extending it, meaning that He is the One who determines provision and apportions it, as He Almighty said, "Allah extends provision to whom He wills, and restricts it" [Rad 13:26].As for his saying, "the sabuhat of His Face," it means the light of His Face, and it is also said to mean the majesty of His Face. From this comes the saying "Subhan Allah," which is indeed an exaltation and glorification of Him. And the saying "Subhanaka" means, "I declare You free, O Lord, from every imperfection."See Sharh al-Sunnah (1/174).