Explanation

Hazrat Gabriel (PBUH)

Gabriel (A.S) is one of the four greatest angels. He is appointed to convey revelations to the prophets by Allah. 

Hazrat Israfel (A.S)

Israfel will blow two times, in the first one, the Doomsday will occur and in the second blowing, the resurrection will occur. Because of this duty of him, He is called the angel of Soor (the Trumpet).

Hazrat Azrael (A.S)

His duty is to grasp the souls of people whose death times have come. He is called as “Malak-ul Mawt”, that is, the angel of death.

Hazrat Mikail (A.S) (Michael)

 He is responsible for the pouring of rain, the blowing of the wind, natural events such as the ordering of seasons and the management of supplications of the created beings.