According to Djebli 1960–2007, "the very existence of this man, and of his work, should be regarded with caution". Modaressi 2003, pp. 82–83 calls it "obvious that such a person never existed and that the name is only a pen name". Other scholars, such as Mohammad Ali Amir-Moezzi, have been more cautious in rejecting Sulaym ibn Qays' historicity, but do agree that the attribution of the work to him is false (see Gleave 2015, pp. 85–86). Djebli, Moktar (1960–2007). "Sulaym b. Ḳays". In Bearman, P.; Bianquis, Th.; Bosworth, C.E.; van Donzel, E.; Heinrichs, W.P. (eds.). Encyclopaedia of Islam, Second Edition. doi:10.1163/1573-3912_islam_SIM_7152. Modaressi, Hossein (2003). Tradition and Survival: A Bibliographical Survey of Early Shīʿite Literature. Oxford: Oneworld. ISBN1-85168-331-3. Gleave, Robert M. (2015). "Early Shiite hermeneutics and the dating of Kitāb Sulaym ibn Qays". Bulletin of the School of Oriental and African Studies. 78 (1): 83–103. doi:10.1017/S0041977X15000038.
Gleave 2015, pp. 86, 102. Gleave, Robert M. (2015). "Early Shiite hermeneutics and the dating of Kitāb Sulaym ibn Qays". Bulletin of the School of Oriental and African Studies. 78 (1): 83–103. doi:10.1017/S0041977X15000038.
Gleave 2015, p. 99: "The content of the first section of the tenth report appears, then, as a rather audacious attempt to attribute to ʿAlī knowledge and mastery of exegetical techniques and a level of hermeneutic sophistication which came into existence in the late eighth/early ninth century." Gleave, Robert M. (2015). "Early Shiite hermeneutics and the dating of Kitāb Sulaym ibn Qays". Bulletin of the School of Oriental and African Studies. 78 (1): 83–103. doi:10.1017/S0041977X15000038.
