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...
His Supplication when Hostility was Shown to Him or when he Saw what he did not Like ...
Given that many Quranic verses point to the supernatural power of the worthy servants...
His Supplication when Sick or Visited by Distress or an Affliction.
The Holy Prophet performed various miracles, the commentaries upon which are recorded...