Belief in Angels and a description of their duties:

2:285 (Y. Ali) The Messenger believeth in what hath been revealed to him from his Lord, as do the men of faith. Each one (of them) believeth in Allah, His Angels, His books, and His apostles. "We make no distinction (they say) between one and another of His apostles." And they say: "We hear, and we obey: (We seek) Thy forgiveness, our Lord, and to Thee is the end of all journeys."

21:27 (Y. Ali) They speak not before He speaks, and they act (in all things) by His Command.
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Jibril (A Messenger, the Angel who brought wahy (Revelation) from Allah

2:97 (Y. Ali) Say: Whoever is an enemy to Gabriel-for he brings down the (revelation) to thy heart by Allah's will, a confirmation of what went before, and guidance and glad tidings for those who believe,-
2:98 (Y. Ali) Whoever is an enemy to Allah and His angels and apostles, to Gabriel and Michael,- Lo! Allah is an enemy to those who reject Faith.
19:17 (Y. Ali) She placed a screen (to screen herself) from them; then We sent her our angel, and he appeared before her as a man in all respects.

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Hamalat al-'Arsh, Those who carry the 'Arsh (throne of Allah)

40:7 (Y. Ali) Those who sustain the Throne (of Allah. and those around it Sing Glory and Praise to their Lord; believe in Him; and implore Forgiveness for those who believe: "Our Lord! Thy Reach is over all things, in Mercy and Knowledge. Forgive, then, those who turn in Repentance, and follow Thy Path; and preserve them from the Penalty of the Blazing Fire!
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Munkar and Nakir (Questions those in the graves)

66:6 (Y. Ali) O ye who believe! save yourselves and your families from a Fire whose fuel is Men and Stones, over which are (appointed) angels stern (and) severe, who flinch not (from executing) the Commands they receive from Allah, but do (precisely) what they are commanded.

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Isra’il The angel of death

32:11 (Y. Ali) Say: "The Angel of Death, put in charge of you, will (duly) take your souls: then shall ye be brought back to your Lord."
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Israfil (The angel that will blow the horn beginning the Day of Judgement)

Will blow the trumpet twice at the end of time. At the first blow, everyone in heaven and earth will die and the second blow all will be brought in front of Allah.

69:13 (Y. Ali) Then, when one blast is sounded on the Trumpet

36:51 (Y. Ali) The trumpet shall be sounded, when behold! from the sepulchres (men) will rush forth to their Lord!
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Harut and Marut

2:102 (Y. Ali) They followed what the evil ones gave out (falsely) against the power of Solomon: the blasphemers Were, not Solomon, but the evil ones, teaching men Magic, and such things as came down at babylon to the angels Harut and Marut. But neither of these taught anyone (Such things) without saying: "We are only for trial; so do not blaspheme." They learned from them the means to sow discord between man and wife. But they could not thus harm anyone except by Allah's permission. And they learned what harmed them, not what profited them. And they knew that the buyers of (magic) would have no share in the happiness of the Hereafter. And vile was the price for which they did sell their souls, if they but knew!
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Makail (Charged with providing sustenance)

2:98 (Y. Ali) Whoever is an enemy to Allah and His angels and apostles, to Jabril and Makail Lo! Allah is an enemy to those who reject Faith.

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Hafaza (The Guardian Angels):

Kiraman Katibin (Honourable Recorders) (Two Angels -One writes down good deeds, and the other writes down evil deeds)

82:11 (Y. Ali) Kind and honourable,- Writing down (your deeds):

Mu'aqqibat (The Protectors) (Angels who keep people from death until its decreed time and who bring down blessings and go back to Allah with the news of the creatures..)

13:11 (Y. Ali) For each (such person) there are (angels) in succession, before and behind him: They guard him by command of Allah. Verily never will Allah change the condition of a people until they change it themselves (with their own souls). But when (once) Allah willeth a people's punishment, there can be no turning it back, nor will they find, besides Him, any to protect.

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Malik is the chief of the angels who guards Hell.

43:77 (Y. Ali) They will cry: "O Malik! would that thy Lord put an end to us!"
He will say, "Nay, but ye shall abide!"
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Zabaniah are 19 angels who torment sinful persons in hell.

74:30 (Y. Ali) Over it are Nineteen.
74:31 (Y. Ali) And We have set none but angels as Guardians of the Fire; and We have fixed their number only as a trial for Unbelievers,- in order that the People of the Book may arrive at certainty, and the Believers may increase in Faith,- and that no doubts may be left for the People of the Book and the Believers, and that those in whose hearts is a disease and the Unbelievers may say, "What symbol doth Allah intend by this ?" Thus doth Allah leave to stray whom He pleaseth, and guide whom He pleaseth: and none can know the forces of thy Lord, except He and this is no other than a warning to mankind.

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Ridwan is the he angel in charge of maintaining Jannah or Paradise.
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