In order to combine the style of relying on the narration...
In order to combine the style of relying on the narration without analyzing them minutely or without employing pro- found rational thinking, on the one hand, and the exercise of convincing the reader about the validity of the narration, on the other hand, ash-Shaykhu 'l-Mufid has relied in his narration of the lives of the Imams (‘a.s.)[^7], and their distinctive characteristics in most instances on what has been mentioned by the neutral historians and biographers.
I do not say that the attribute of neutrality can be applied to all of them and to all that they narrate, nor do I claim that the accusation of partiality and sectarian bias in presenting historical events for religious or political motivations are applicable to the sources not used by al-Mufid.
I leave aside this discussion about the affiliations of the historians, narrators and jurists to the rulers, and that they choose to ignore whatever the rulers wanted to be ignored and that they presented favourably whatever the rulers wanted to be presented favorably. At this stage, I would just like to state that the biased and official historians have ignored the lives of the later Imams of Ahlu 'l-bayt (‘a.s.), except where the events were connected to the rulers and the caliphs.
This is the reason why ash-Shaykhu 'l-Mufid was compelled to rely on the Shi‘ah Imamiyyah narrators when discussing the Imams of Ahlu 'l-bayt (‘a.s.), who came after the first Islamic century. The style of brevity which al-Mufid has imposed on him- self in al-Irshad has compelled him in many instances to rely on a single historian whom he has chosen against the others without giving reasons for his preference as a source for that particular event.
This is so even in cases where there is a difference among the historians on that particular issue, for instance, when he mentions the death of al-Imam Musa al-Kazim (‘a.s.) in which he has relied entirely on Abu 'l-Faraj al-Isbahani. This is one of the objectionable points raised by the respected translator against the writer. Moreover, Abu 'l-Faraj is considered closer than others to neutrality by the opponents of the Imamiy- yah, and he is not accused by them of sectarian bias.
If I may say so, the translator himself was also acting under the same self-imposed restriction when he mentions in his foot- note (p.275) only one source for the event of Ghadir Khumm, that is, al-Baladhuri.