﴿ تَنَزَّلُ ٱلْمَلَٰٓئِكَةُ وَٱلرُّوحُ فِيهَا بِإِذْنِ رَبِّهِم مِّن كُلِّ أَمْرٍۢ ﴾

“in hosts descend in it the angels, bearing divine inspiration by their Sustainer's leave; from all [evil] that may happen”

Please check ayah 97:5 for complete tafsir.