Surah Al-Furqan Verse 25

وَيَوْمَ تَشَقَّقُ السَّمَاءُ بِالْغَمَامِ وَنُزِّلَ الْمَلَائِكَةُ تَنْزِيلًا

And [mention] the Day when the heaven will split open with [emerging] clouds, and the angels will be sent down in successive descent