Qur'ān 25:25 · Al-Furqan (الفرقان)

وَيَوْمَ تَشَقَّقُ ٱلسَّمَآءُ بِٱلْغَمَـٰمِ وَنُزِّلَ ٱلْمَلَـٰٓئِكَةُ تَنزِيلًا

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