Surah An-Naba 78:38

يَوْمَ يَقُومُ ٱلرُّوحُ وَٱلْمَلَـٰٓئِكَةُ صَفًّا ۖ لَّا يَتَكَلَّمُونَ إِلَّا مَنْ أَذِنَ لَهُ ٱلرَّحْمَـٰنُ وَقَالَ صَوَابًا

The Day that the Spirit [i.e., Gabriel] and the angels will stand in rows, they will not speak except for one whom the Most Merciful permits, and he will say what is correct.

Translation: Saheeh International

Tafsir

on the day yawma is the adverbial qualifier for lā yamlikūna ‘they will not be able to’ when the Spirit Gabriel or God’s hosts and the angels stand arrayed saffan is a circumstantial qualifier in other words mustaffīna. …

Excerpt from Tafsir al-Jalalayn, commentary on 78:38, via Quran.com. The reader has the full commentary and 9 more tafsirs.