اللَّهُ يَتَوَفَّى الْأَنفُسَ حِينَ مَوْتِهَا وَالَّتِي لَمْ تَمُتْ فِي مَنَامِهَا ۖ فَيُمْسِكُ الَّتِي قَضَىٰ عَلَيْهَا الْمَوْتَ وَيُرْسِلُ الْأُخْرَىٰ إِلَىٰ أَجَلٍ مُّسَمًّى ۚ إِنَّ فِي ذَٰلِكَ لَآيَاتٍ لِّقَوْمٍ يَتَفَكَّرُونَ (42)
(39:42) It is Allah Who takes away the souls of people at the hour of their death, and takes away at the time of sleep the souls of those that have not died. *60 Then He retains the souls of those against whom He had decreed death and returns the souls of others till an appointed time. Surely there are Signs in this for a people who reflect. *61
*60) "Taking the souls during sleep" implies the suspension of the powers of feeling and consciousness, understanding and will.
*61) By this Allah wants every man to realize how life and death are entirely in His own hand. No one has the guarantee that he will certainly get up alive in the morning when he goes to sleep at night. No one knows what disaster could befall him within a moment, and whether the next moment would be a moment of life for him or of death. At any time, while asleep or awake, in the house or outside it, some unforeseen calamity, from inside his body or from outside, can, suddenly cause his death: Thus, man who is so helpless in the hand of God, .would be foolish if he turned away from the same God or became heedless of Him.