Praise of Allah - His comprehension (of things) is not through eyes
Praise be to Allah who is above all similarity to the creatures, is above the
words of describers, who displays the wonders of His management for the on-lookers,
is hidden from the imagination of thinkers by virtue of the greatness of His
glory, has knowledge without acquiring it, adding to it or drawing it (from
someone), and Who is the ordainer of all matters without reflecting or thinking.
He is such that gloom does not concern Him, nor does He seek light from brightness, night does not overtake Him nor does the day pass over Him (so as to affect Him in any manner). His comprehension (of things) is not through eyes and His knowledge is not dependent on being informed.
A part of the same sermon about the Prophet
Allah deputised the Prophet with light, and accorded him the highest precedence in selection. Through him Allah united those who were divided, overpowered the powerful, overcame difficulties and levelled rugged ground, and thus removed misguidance from right and left.
Nahjul Balagha, Sermon 213