Surah Qaf 50:1

قٓ ۚ وَٱلْقُرْءَانِ ٱلْمَجِيدِ

Qāf. By the honored Qur’ān...

Translation: Saheeh International

Tafsir

Qāf God knows best what He means by this letter. By the glorious Qur’ān by the noble Qur’ān the disbelievers of Mecca have certainly not believed in Muhammad (s).

Excerpt from Tafsir al-Jalalayn, commentary on 50:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.