Surah Ash-Shu'ara 26:28

قَالَ رَبُّ ٱلْمَشْرِقِ وَٱلْمَغْرِبِ وَمَا بَيْنَهُمَآ ۖ إِن كُنتُمْ تَعْقِلُونَ

[Moses] said, "Lord of the east and the west and that between them, if you were to reason."

Translation: Saheeh International

Tafsir

He Moses said ‘The Lord of the east and the west and all that is between them — should you comprehend’ that He is such a Lord then believe in Him alone.

Excerpt from Tafsir al-Jalalayn, commentary on 26:28, via Quran.com. The reader has the full commentary and 9 more tafsirs.