?. Laoust and H. , Les schismes dans l'Islam. Introduction à une étude de la religion musulmane, 1965.

?. Palmer and A. , The Seventh Century in the West-Syrian Chronicles, 1993.
DOI : 10.3828/978-0-85323-238-4

?. Teule, H. Ghiwarghis, I. ». Dans-thomas, D. Et-roggema, and B. , Christian- Muslim Relations. A Bibliographical History, pp.600-900, 2009.

?. Vecchia-vaglieri and L. , « al-?asan b. ?Al? b. Ab? ??lib », The Encyclopaedia of Islam 2, p.242, 1971.

. Hasan-b, Ali's reign, whereas Muslim sources consider that al-Hasan abdicated shortly after his father's death. Is Thomas of Marga just mistaken? In this short paper, I argue that his chronicle could reflect some early Shi?i vision of the history of the caliphate