Quran 25:25 — Surah Al-Furqan, ayah 25

وَيَوۡمَ تَشَقَّقُ ٱلسَّمَآءُ بِٱلۡغَمَٰمِ وَنُزِّلَ ٱلۡمَلَـٰٓئِكَةُ تَنزِيلًا

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

A na Dan kada se nebo rastvori i samo tanak oblak pojavi i kada se meleki sigurno spuste,