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. 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.

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

―Quran 39:42

God takes the souls of the dead and the souls of the living while they sleep- He keeps hold of those whose death He has ordained and sends the others back until their appointed time- there truly are signs in this for those who reflect.

وَمَا تَدْرِي نَفْسٌ بِأَيِّ أَرْضٍ تَمُوتُ

no soul knows in what land it will die.

— Quran 31:34