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Shiavault - a Vault of Shia Islamic Books The Conception of the Sahaba's Ultimate Decency and the Political Authority in Islam Chapter 4 — the Muslims' Attitudes Towards the Authority After the Prophet Regarding the authority succeeding the Prophet (peace be upon him and his family), Muslims were engaged in two main parties each of whom is claiming following the manifest right.
The historicists: This term is called upon those who justified and legalized the total occurrences of the political history of Islam, eminently the reign of Rashidite caliphate. They are known as ‘AhlusSunneh.’ This term was originated in the Umayid reign and, markedly, in Muawiya's, when power overcame legality and survival became for the strongest who could submit majority of people to his domination.
Thence, this year was called ‘year of congruity’, and the party who followed the prevailing force was called ‘the congruous.’ They are, in fact, the ruling party. They are, although disagreeing to the ruling regime in some situations, loyal to the Umayids who possessed the riches banned to those who stood against the ruling regime. AhlusSunneh, however, looked at the Umayids as an emblem of the Muslims' unity.
The Shariites: They are, in various proportions, the party that opposed and decided illegality of occurrences of the political history of Islam. Proportionally, the Rashidite caliphate is considered as a golden reign if balanced with the Umayid. Moreover, there is no single face of comparison between the two. The Abbasid caliphate was worse than the Umayid.
The Shariites see that the divine doctrine did nominate the authority after the Prophet, and that God did not leave this affair for personal impressions. They believe that God did elect an authority and granted him the authorization of joining leadership to issuing judgments. The defined authority after the Prophet is AlibnAbiTalib (peace be upon him). According to arrangements of the doctrine, each authority is to nominate the successor.
The adopters of such a belief is known as ‘Shia.’ Since the time of the Prophet, Shism was instituted. They are the opposition party all over history. At all the reigns, especially the Umayid and the Abbasid, Shias were chased, banished, banned from their basic rights, inadmitted as testifiers, disavowed as beneficiaries of the state imports and cursed forever. Below, both parties' opinion and argument of the authority after the Prophet shall be respectively debated.