In sum, action is contingent upon ability. Thus, anyone who lacks the power and authority to govern and exercise command is not an imam, even if he deserves (1) to be granted power so that he may become capable of doing so. The fact that it is permissible (2) or obligatory for him to be empowered (3) is not the same as actually possessing power. An imam is one who is empowered and capable [and possesses authority] (4). None of these men met that description except Ali [may Allah be pleased with him] (5), as previously explained.
The fourth point:
It may be said: What do you mean by “deserving”? Do you mean that one of these men had to be appointed to the imamate to the exclusion of all the other members of Quraysh? Or do you mean that one [of them] (6) was among those qualified for the caliphate? If you mean the former, it is denied and rejected. If you mean the latter, that was a qualification they shared (7) with many members of Quraysh.
[The fifth point:
It may be said: The imam is the one who is followed (8)] (9). This may occur in two ways. The first is that people defer to him in matters of knowledge and religion and obey him voluntarily because he knows the command of Allah Almighty and enjoins it. A person therefore obeys him for that reason, even if he is incapable of compelling him (10) to obey.