Surah Al-An'am, ayah 61

6:61

وَهُوَ ٱلۡقَاهِرُ فَوۡقَ عِبَادِهِۦۖ وَيُرۡسِلُ عَلَيۡكُمۡ حَفَظَةً حَتَّىٰٓ إِذَا جَآءَ أَحَدَكُمُ ٱلۡمَوۡتُ تَوَفَّتۡهُ رُسُلُنَا وَهُمۡ لَا يُفَرِّطُونَ ٦١

Wahuwal-qāhiru fawqa 'ibādihī wayursilu 'alaykum hafazatan hattā idhā jā'a ahadakumul-mawtu tawaffathu rusulunā wahum lā yufarritūn

And He is the subjugator over His servants, and He sends over you guardian-angels until, when death comes to one of you, Our messengers [i.e., angels of death] take him, and they do not fail [in their duties].