Abū Hurayrah رضي الله عنه reported Allāh's Messenger ﷺ as saying: “Allāh has mobile (squads) of angels, who have no other work (to attend to but) to follow the assemblies of ḏikr and when they find such assemblies in which there is ḏikr (of Allāh) they sit in them and some of them surround the others with their wings till the space between them and the sky of the world is fully covered, and when they disperse (after the assembly of ḏikr is adjourned) they go upward to the heaven and Allāh, the Exalted and Glorious, asks them although He is best informed about them:‘Where have you come from?’They (the angels) say: ‘We come from Thine servants upon the earth who had been glorifying Thee (reciting SubḥānAllāh), uttering Thine Greatness (reciting Allāhu Akbar) and uttering Thine Oneness (reciting Lā ʾilāha ʾillā llāh) and praising Thee (reciting Alḥamdulillāh) and begging of Thee.’Allāh would say: ‘What do they beg of Me?’ They (the angels) would say: ‘They beg of Thee the Paradise of Thine.’ Allāh would say: ‘Have they seen My Paradise?’ They (the angels) said: ‘No, our Lord.’ Allāh would say: ‘(What it would be then) if they were to see Mine Paradise?’ They (the angels) said: ‘They seek Thine protection.’ Allāh would say: ‘Against what do they seek protection of Mine?’ They (the angels) would say: ‘Our Lord, from the Hell-Fire.’Allāh would say: ‘Have they seen My Fire?’ They (the angels) would say: ‘No.’ Allāh would say: ‘What it would be if they were to see My Fire?’They (the angels) would say: ‘They beg of Thee forgiveness.’ Allāh would say: ‘I grant pardon to them, and confer upon them what they ask for and grant them protection against which they seek protection.’ They (the angels) would again say: ‘Our Lord, there is one amongst them such and such simple servant who happened to pass by (that assembly) and sat there along with them (who had been participating in that assembly).’ Allāh would say: ‘I also grant him pardon, for they are a people the seat-fellows of whom are in no way unfortunate.’[Ṣāḥīḥ Muslim 2689]