The later umayyad caliphs were relatively more corrupt and cared less about such religious issues .
后来的倭马亚哈里发则相对较为腐败,关心这些宗教问题少。
Most umayyad rulers insisted on arab primacy over non-arab converts to islam , while the abbasid caliphs accepted the principle of arab and non-arab equality as muslims .
Thus the arab umayyad dynasty of caliphs , which had moved the capital from medline to damascus in 661 , came to be regarded with much justification as a parasitic clique that had outlived its usefulness once the conquests were completed .