Shi'a School of thought believes that an Imam has a connection with the Divine Knowledge and is endowed with it so the knowledge of Shi'a Imams is beyond the ordinary knowledge but has its especial channels and sources.
The topic of "Shi'a leaders' sources of knowledge and wisdom" can be followed by the study of the Qur'anic verses and the Islamic narrations posed in this matter. A book called al-Jami'ah has been introduced as one of Imam's sources of knowledge. This book has been written by the commander of the faithful (Imam Ali) on many pieces of skin in the time of the holy Prophet of Islam. An inquiry in many narrations that quoted in this field, indicates to transformation of an expanded comprehensive knowledge which makes the Imam needless of others but the others in need in him for gaining the facts of Islamic rules and their problems. This scroll is a sign indicating to the fact that the holy prophet (p.b.u.h) conveyed the lawful and unlawful of Islam perfectly.