And the author mentioned that it’s not authentic that the angel of death’s name is ʿIzrāʾīl. And this, as mentioned by the author, even though it has been reported in some narrations, however, these narrations are all weak and unauthentic.
From the actions of the angels is that Allāh, the Mighty and Majestic, named this noble angel as Malak al-Mawt (the angel of death) in the Qur’ān, as Allāh said (what means):
﴾Say: “The angel of death (Malak al-Mawt), who is set over you, will take your souls…”﴿ [as-Sajdah:11]
Therefore, naming him ʿIzrāʾīl is not established.
And the evidences are many in the Qurʾān with regards to the actions of the angels that are connected with taking the soul. As Allāh, the Mighty and Majestic, said (what means):
﴾And He sends guardians (angels guarding and writing all of one’s good and bad deeds) over you, until when death approaches one of you, Our Messengers (angel of death and his assistants) take his soul, and they never neglect their duty.﴿ [al-Anʿām:61]
The one who takes the soul and is in contact with it is the Malak al-Mawt and there are other angels that aid and assist him, as Allāh, the Mighty and Majestic, said (what means):
﴾And He sends guardians (angels guarding and writing all of one’s good and bad deeds) over you…﴿ [al-Anʿām:61]
And as He said (what means):
﴾Those whose lives the angels take…﴿ [an-Naḥl:32]
So, the one who takes the soul and is in contact with it is a single angel, and it is the Malak al-Mawt. And these ones (i.e the other angels) aid him as was reported in the long Ḥadīth of al-Barāʾ bn ʿĀzib; when the soul is taken and they (the Angels) ascend with it to the heaven.