On this date, September 2nd, in 1192, King Richard I "The Lionheart" and Saladin signed the Treaty of Ramla, ending the Third Crusade.

Saladin, a Sunni Muslim from Egypt, and Sultan of Egypt and Syria, had captured Jerusalem in 1187 after a siege.  The Christians in Jersusalem were allowed to live because they threatened to destroy the Dome of the Rock and the Al Aqsa Mosque if not given the chance to surrender and flee.

King Richard I led the Crusade to retake Jerusalem.  His army was victorious over Saladin's troops in the Battle of Arsuf, but King Richard was unable to take Jersusalem.  King Richard and Saladin shared a mutual respect during their battles;  when Richard became ill, Saladin sent an iced fruit drink as a remedy.  King Richard in turn offered to marry his sister to Saladin's brother, to forge a common alliance.  In 1192, after mass murder of prisoners on both sides, both King Richard and Saladin were forced by ill health to sign the hudna treaty, pledging to end the war for three years.

I can find no record that Richard was educated on Islamic doctrines, but in a twist, it was he who wished for the hudna, which greatly impressed Saladin.  From Itinerarium Peregrinorum et Gesta Regis Ricardi (1864):

The King was puzzled and unaware of anything better that he could do. He demanded of Saif ad­Din, Saladin's brother, that he act as go­between and seek the best conditions be could get for a truce between them. Saif ad­Din was an uncommonly liberal man who bad been brought, in the course of many disputes, to revere the King for his singular probity.

[...]

When [the] conditions of peace had been reduced to writing and read to him, King Richard agreed to observe them, for he could not hope for anything much better, especially since he was sick, relying upon scanty support, and was not more than two miles from the enemy's station. Whoever contends that Richard should have felt otherwise about this peace agreement should know that he thereby marks himself as a perverse liar.

May it be noted that I have never contended that Richard should have felt otherwise.

Things were thus arranged in a moment of necessity. The King, whose goodness always imitated higher things and who, as the difficulties were greater, now emulated God himself, sent legates to Saladin. The legates informed Saladin in the hearing of many of his satraps [provincial governors in the Sultanate], that Richard had in fact sought this truce for a three year period so that he could go back to visit his country and so that, when he had augmented his money and his men, he could return and wrest the whole territory of Jerusalem from Saladin's grasp if, indeed, Saladin were even to consider putting up resistance. To this Saladin replied through the appointed messengers that, with his holy law and God almighty as his witnesses, he thought King Richard so pleasant, upright, magnanimous, and excellent that, if the land were to be lost in his time, he would rather have it taken into Richard's mighty power than to have it go into the hands of any other prince whom be had ever seen.

At which point the legates and satraps gave into the building latent erotic tension, and got down to some serious man-lovin'.  Okay.  I made that part up.

Previous Days in the "Religion of Peace™":

Sept 1: Beslan Massacre
Aug 29: Jihad on European Synagogues
Aug 28: Poet Laureate Baraka
Aug 27: Bombardment of Algiers
Aug 26: Sistani vs. Sadr