The Angels of Laylat al-Qadr
Angels who descend with the Spirit on Laylat al-Qadr by their Lord's leave, with peace on every matter, as in al-Qadr 4; it is among the greatest instances of angels descending upon the earth's people.
In the Qur'an · 1
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تَنَزَّلُ ٱلْمَلَـٰٓئِكَةُ وَٱلرُّوحُ فِيهَا بِإِذْنِ رَبِّهِم مِّن كُلِّ أَمْرٍ
The angels and the Spirit descend therein, by the permission of their Lord, with all decrees.