I think it's really important to understand in what ways the Muslim rulers differed in their relations with non-Muslims - for instance, did they debate whether non-Muslims had a soul, as Christian theologians debagted concerning 'heathens' ? And I wonder how the Muslim idea of Muhammed being the last Prophet, convery a sense to Muslims, of their having a special relationship with the Divine? In what way is that, similar or different from the Jewish conceptualisation of Jews as the 'chosen people'?