Surah Al-Qadr 97:4

تَنَزَّلُ ٱلْمَلَـٰٓئِكَةُ وَٱلرُّوحُ فِيهَا بِإِذْنِ رَبِّهِم مِّن كُلِّ أَمْرٍ

The angels and the Spirit [i.e., Gabriel] descend therein by permission of their Lord for every matter.

Translation: Saheeh International

Tafsir

The angels and the Spirit namely Gabriel descend tanazzalu one of the two original tā’ letters of tatanazzalu has been omitted in it on that night by the leave of their Lord by His command with every command that God has decreed from that year to the following one min is causative functioning as bi ‘with’.

Excerpt from Tafsir al-Jalalayn, commentary on 97:4, via Quran.com. The reader has the full commentary and 9 more tafsirs.