EDWARD GIBBON and SIMON OCKLEY,

“I Believe In One God, & MUHAMMAD, An Apostle Of God' is the simple and invariable profession of Islam.”

The intellectual image of the Deity has never been degraded by any visible idol; the honor of the Prophet has never transgressed the measure of human virtues; and his living precepts have restrained the gratitude within the bounds of reason and religion.”
 

 (HISTORY OF THE SARACEN EMPIRES,  London, 1870, p. 54)