With the Holy Qur’an as a kind of eye, what does one see and how? If one happens to be a Caliph of a dominion spanning Spain to China and also happens to be a Hafidh—a person who has memorized the entire holy book—what is it like to recite it from memory so that the entirety of the book is in one’s short term memory? As a kind of eye, then, the viewer must have been able to observe wondrous things.
“For the Holy Qur’ān is like an eye given to us by Allāh.“
Irshad: Wisdom of a Sufi Master | Eighteenth Discourse—page 359-360