Surah Ar-Ra'd — Ayah 9 (13:9)
عَٰلِمُ ٱلۡغَيۡبِ وَٱلشَّهَٰدَةِ ٱلۡكَبِيرُ ٱلۡمُتَعَالِ ٩
English translation (Saheeh International)
[He is] Knower of the unseen and the witnessed, the Grand, the Exalted.
Brief commentary
This is because He, may He be glorified, knows about everything that is not perceived by His creation as well as everything that is perceived by them. He is the Majestic in His attributes, names and actions. The Supreme over every creation of His in His self and attributes.