Imam Jafar as-Sadiq was born in Medina on the 17 of Rabi ul-Awwal in the year of 82 Hijra. His father was the 5th Imam Mohammed Baqar (as) and his mother was Umme Farwa. It is said that Jafar as-Sadiq was born circumcised.
Contrary to the Western belief, the Shias firmly believe that Imam Jafar as-Sadiq had Ilm-e-Ladunni or ‘God given Knowledge’. The Shias believe that a man’s subconscious mind is quite different from his conscious mind. It is the treasure house of knowledge of mankind and of the world. Modern science lends support to this theory. Biological studies have gradually proved that every group of cells in the human body knows whatever is knowable from the beginning of the world till today. The Shias contend that when someone is chosen as a Prophet or as an Imam, the curtain which hangs between the conscious and subconscious mind, is lifted and he can make use of the knowledge which is stored in his subconscious mind.