Al-An'am 6:61

وَهُوَ ٱلۡقَاهِرُ فَوۡقَ عِبَادِهِۦۖ وَيُرۡسِلُ عَلَيۡكُمۡ حَفَظَةً حَتَّىٰٓ إِذَا جَآءَ أَحَدَكُمُ ٱلۡمَوۡتُ تَوَفَّتۡهُ رُسُلُنَا وَهُمۡ لَا يُفَرِّطُونَ 61

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 take him, and they do not fail [in their duties]