On principle, the Holy Prophet had three roles:
- The Messenger of Allah to deliver the Divine Message and explain it to them thoroughly.
- The Judge to resolve the disputes.
- The Political Leader of the Islamic Ummah.
All Muslims of different sects agree upon the above roles of the Prophet. They also agree that all of the above roles were granted to him by Allah and people had no input in that regard.
The Shiites confirm all the above roles are also given by God to the 12 infallible Imams, with the exception of delivering the Message of Allah in the sense of receiving any revelation.
To this end, the Imams are appointed by the Prophet as the true explainers of the Quran, the Judges and the Leaders of the Islamic Ummah.