وَيَوْمَ تَشَقَّقُ ٱلسَّمَآءُ بِٱلْغَمَٰمِ وَنُزِّلَ ٱلْمَلَٰٓئِكَةُ تَنزِيلًا
2:211.
Commentary:
The reference in the verse may be to the Battle of Badr when rain came as a welcome relief to Muslims, and angels descended in large numbers to help them. Elsewhere the Quran says that in the battlefield of Badr as many as five thousand angels descended to attack disbelievers (3:125-126). It further says, "God revealed to the angels, saying, ‘I am with you; so give firmness to those who believe. I will cast terror into the hearts of those who disbelieve. Smite, then, the upper parts of their necks, and smite off all finger-tips" (8:13).
2:211.