The conditions prevented the community from pledging...
The conditions prevented the community from pledging allegiance to the nominated Imams but two of them, who were 'Ali and al-Hasan peace be on them. After al-Hasan, the formal succession started. Such kind of succession was usurped through weapons or money.
Namely, such kind of succession occurred as al-Ghazali said: "The people assumed the succession without any merit." [1] It was better for the Muslims or the Muslim historians in particular to regard the end of al-Hasan's succession as the beginning of the time of the kingdom. So they would be able to know that time clearly through its aspects, its policies, and its non-Islamic deeds.
If they (the Muslims and the Muslim historians) had done that, they would have maintained the ideal, Islamic beliefs which that ideal succession followed. For they followed the example of the Prophet, may Allah bless him and his family. Also they (they Muslims and the Muslim historians) would have protected Islam from those kings who imposed their succession on Muslims. Unfortunately, the Muslim historians have called those kings successors while they (the kings) were not worthy of this title.
For this reason, the mentioned historians have wronged Islam though they wanted to do good for it. I (the author) wonder: was it appropriate for the successor, who had [1] Farid Wajdi, Da'irat al-Ma'arif, vo1.3, p. 231. to be like the Prophet in his words and acts, to perform the Friday prayer on Wednesday or to perform it again in the morning? Was it appropriate for him to do Islamically forbidden acts?
In other words, was it appropriate for him to sell gold for that which is more than it in weight, to attribute the corrupt persons to the family of the Prophet, to murder the believing people, and to supply the unbelievers with money to wage war against his Muslim brothers, and the like? So why had the historians not called such persons kings instead of calling them successor? Just imagine those persons who succeeded Mu'awiya. Did they not belong to the tree which Allah has cursed in the Qur'an?
Just imagine Yazid, Abd al-Malik, al-Walid, and the like! All these acts should urge Muslims to support Islam. They should not attribute to the Islamic authority but to those ideal Imams who followed the example of the Prophet, may Allah bless him and his family. As we have said that al-Hasan was the most similar person to the Apostle of Allah, may Allah bless him and his family, in form, manner, and nobility.