Inevitability of death (al-mawt)

كُلُّ نَفْسٍ ذَآئِقَةُ ٱلْمَوْتِ ۗ وَنَبْلُوكُم بِٱلشَّرِّ وَٱلْخَيْرِ فِتْنَةً ۖ وَإِلَيْنَا تُرْجَعُونَ

Every soul will taste death. And We test you with evil and with good as trial; and to Us you will be returned.

إِنَّكَ مَيِّتٌ وَإِنَّهُم مَّيِّتُونَ

Indeed, you are to die, and indeed, they are to die.