这一犹豫态度至少部分可以用一个事实来解释：不管是本·拉登还是奥马尔（塔利班领袖 ） ， 都无法满足成为哈里发的条件，因为这必须追溯到先知穆罕默德所在的古莱什（Quraysh）部落。
This hesitation can be explained, at least partly, by the fact that neither Osama bin Laden nor Mullah Omar (the Taliban’s leader) can fulfill the conditions for being a caliph, one of which is proof of descent from the Prophet Muhammad’s tribe, the Quraysh.