This tradition of 'Ali was appropriate for the expected conditions.
This tradition of 'Ali was appropriate for the expected conditions. The Imami Shi'a uses this method to prove the Imamate. The Sunni scholars have reported successive Prophetic traditions through their methods. Also non- Sunni scholars have clearly reported the same traditions through their methods.
They (the traditions) have limited the Imamate to twelve Imams who were all from Quraysh.[^6] Also they sometimes mention their names Imam by Imam to the last one of them, who is the awaited Mahdi (the rightly guided one), with whom Allah will fill the earth with justice when it is full of oppression and injustice. Moreover, there are personal texts which the imams said to nominate each other.
Then the supremacy of each imam in knowledge, acts, miracles, and outstanding merits underlines both kinds of the above- mentioned traditions. As for the pledge of allegiance of people, it is not a condition in the imamate of the Imam. In other words, people should pledge allegiance to those whom the Prophetic traditions have underlined. The Imamis regard pledging allegiance to other than the Imam as a correct act.
It (pledging allegiance) is not accepted from anyone but at the time of compulsion. 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."[^7] 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.