hadees

 It is narrated on the authority of Abu Hurayrah (may Allah be pleased with him) that there are some angels of Allah who go for a walk and they have no other business. They look for gatherings of remembrance of God. Then when they find a gathering in which remembrance of God takes place, sit there.  And the angels ascend and ascend to the heavens, so that the space is filled with their wings, from the earth to the heavens. When people part from this assembly, they ascend and ascend to heaven.  He asks them even though he knows very well, where did you come from?  They say: We have come to the earth from Thy servants, they are glorifying Thee, they are glorifying Thee, they are saying, "There is no god but Allah," and they are praising Thee (ie, Praise be to Allah, and praise be to Allah).  They are reciting and asking Allah for something. The Lord says: What do you ask of me? The angels ask. They ask you for Paradise. The Lord says: Have they seen my Paradise?  The angels say: They have not seen, O our Lord! Our Lord says: Then what would have happened to them if they had seen My Paradise? The angels say: They seek refuge in Thee: The Lord says: From what?  Do they seek refuge? The angels say: From your fire, our Lord! Our Lord says: Have they seen the fire? The angels say: No, the Lord says: Then if they see my fire, what will become of them?  The angels say: They seek Thy forgiveness. The Lord says: (By His grace and bounty) I have forgiven them and given them what they ask for, and from whom they seek refuge.  Of  Then the angels say: O our Lord!  There was a servant among them who was a sinner. He came out and sat down with them.  The Lord says: I have forgiven him. There are those whose companions are not unlucky.

 Sahih Muslim 6839, Kitab al-Dhikr