Surah Al-Qalam 68:1

نٓ ۚ وَٱلْقَلَمِ وَمَا يَسْطُرُونَ

Nūn. By the pen and what they inscribe,

Translation: Saheeh International

Tafsir

Nūn one of the letters of the alphabet God knows best what He means by it. By the Pen with which He has inscribed the records of all creatures in the Preserved Tablet and what they inscribe that is the angels of good and righteousness.

Excerpt from Tafsir al-Jalalayn, commentary on 68:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.