...slumber does not overtake Him nor sleep;
whatever is in the heavens and whatever is
in the earth is His; who is he that can intercede
with Him by His permission? He knows what
is before them and what is behind them, and they
cannot comprehend anything out of His knowledge
except what He pelases, His knowledge extends
over the heavens and the earth, and the preservation
of them both tires Him not, and He is the Most High, the Great.
Ayat ul Kursi 2.255