Guy and Raymond III of Tripoli were initially enemies, although the threat posed by Salāḥ ad-Dīn eventually forced them to reconcile. In 1187, Guy and his forces marched to relieve Raymond who was being besieged at Tiberias by Salāḥ ad-Dīn and the Saracens. Making the grave mistake of forcing his way through the Saracen army during the Battle of Hattin, Guy abandoned his only source of fresh water.
Guy and his men were unable to advance or retreat and forced to camp on the dry plain. The surrounding Saracens harassed them with constant volleys of arrows and set fire to the grass in order to further exhaust their enemies from heat. Every attempt made by the crusaders to break out failed, and Salāḥ ad-Dīn crushed them after driving them into the hills.