The other main explanation holds that Abd al-Malik, in the heat of the war with Ibn al-Zubayr, sought to build the structure to divert the focus of the Muslims in his realm from the Ka'aba in Mecca, where Ibn al-Zubayr would publicly condemn the Umayyads during the annual pilgrimage to the sanctuary. Though most modern historians dismiss the latter account as a product of anti-Umayyad propaganda in the traditional Muslim sources and doubt that Abd al-Malik would attempt to alter the sacred Muslim requirement of fulfilling the pilgrimage to the Ka'aba, other historians concede that this cannot be conclusively dismissed.