Volume 8, Book 73, Number 225:
Narrated Abu Huraira:
The Prophet said, “The most awful (meanest) name in Allah’s sight.” Sufyan said more than once,
“The most awful (meanest) name in Allah’s sight is (that of) a man calling himself king of kings.”
Volume 8 – 1381 / 1700
SAHIH BUKHARI VOLUME 8 > BOOK 73: GOOD MANNERS AND FORM (AL-ADAB)
Sufyan said, “Somebody else (i.e. other than Abu Az-Zinad, a sub-narrator) says: What is meant by
‘The king of kings’ is ‘Shahan Shah.,”