Surah Yusuf 12:1

الٓر ۚ تِلْكَ ءَايَـٰتُ ٱلْكِتَـٰبِ ٱلْمُبِينِ

Alif, Lām, Rā. These are the verses of the clear Book.

Translation: Saheeh International

Tafsir

Alif lām rā’ God knows best what He means by these letters. Those verses are the verses of the Book the Qur’ān the genitive annexation carries the meaning of partitive min ‘from’ that makes plain the one that manifests truth distinguishing it from what is falsehood.

Excerpt from Tafsir al-Jalalayn, commentary on 12:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.