Malak al-Mawt
The angel the Qur'an names expressly in al-Sajdah 11 — 'the angel of death who is entrusted with you' — and hadith indicates he is the angel charged with taking souls, appearing in the Isra' narration of the Two Sahihs.
In the Qur'an · 2
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۞ قُلْ يَتَوَفَّىٰكُم مَّلَكُ ٱلْمَوْتِ ٱلَّذِى وُكِّلَ بِكُمْ ثُمَّ إِلَىٰ رَبِّكُمْ تُرْجَعُونَ
Say: The angel of death, who hath charge concerning you, will gather you, and afterward unto your Lord ye will be returned.
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إِنَّ ٱلَّذِينَ قَالُوا۟ رَبُّنَا ٱللَّهُ ثُمَّ ٱسْتَقَـٰمُوا۟ تَتَنَزَّلُ عَلَيْهِمُ ٱلْمَلَـٰٓئِكَةُ أَلَّا تَخَافُوا۟ وَلَا تَحْزَنُوا۟ وَأَبْشِرُوا۟ بِٱلْجَنَّةِ ٱلَّتِى كُنتُمْ تُوعَدُونَ
Lo! those who say: Our Lord is Allah, and afterward are upright, the angels descend upon them, saying: Fear not nor grieve, but hear good tidings of the paradise which ye are promised.