In October 1242, Nablus was raided by the Knights Templar. This was the conclusion of the 1242 campaign season in which the Templars had joined forces with the Ayyubid emir of Kerak, An-Nasir Dawud, against the Mamluks. The Templars raided Nablus in revenge for a previous massacre of Christians by their erstwhile ally An-Nasir Dawud. The attack is reported as a particularly bloody affair lasting for three days, during which the Mosque was burned and many residents of the city, Christians alongside Muslims, were killed or sold in the slave markets of Acre.