De Lacy O'Leary,
Arabic Thought and Its Place in History…
(1922)
“ For the most part the Mu'tazilites took the lax view that these would be favourably treated as against the rigorist opinion which reserved eternal salvation to good Muslims, an opinion which appeared amongst the stricter believers during the 'Umayyad period. The two first named of an-Nazzam's pupils, however, introduced a new theory entirely repugnant to orthodox Islam, though familiar to the extremer Shi'ite sects, that those neither decisively good nor absolutely bad, pass by transmigration into other bodies until they finally deserve either salvation or damnation. ”
