Surah Ash-Shu'ara 26:192

وَإِنَّهُۥ لَتَنزِيلُ رَبِّ ٱلْعَـٰلَمِينَ

And indeed, it [i.e., the Qur’ān] is the revelation of the Lord of the worlds.

Translation: Saheeh International

Tafsir

Truly it the Qur’ān is the revelation of the Lord of the Worlds

Excerpt from Tafsir al-Jalalayn, commentary on 26:192, via Quran.com. The reader has the full commentary and 9 more tafsirs.