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 Ja'far al-Sadiq (as)
The knowledge and character par excellence of the Imam attracted people of all kinds ...
The Shi'a are of the belief that, in the Salat prayer, one must make the prostration ...
His Supplication when Sick or Visited by Distress or an Affliction.