Imamate (Divinely Appointed Leadership) is a very high position, and it is only Allah who can decide who is qualified for it. And if the Prophet Muhammad (S) announced to the people that the Twelve Imams are the leaders, or that the Ahlul Bayt are the people that we must refer to, or in that Imam Ali is his successor, it was only because he was asked...
Twenty Traditions from Imam Sajjad (as)
...With that said, a question may arise here that while there were too many companion...
...Inspire us with knowledge to choose the best and make that a means to being please...
Twenty traditions from Imam Ali al-Ridha (as)