Quoted from the lives of the Fourteen Infallibles In The History of Islam:
A detailed biography of Imam Musa bin Ja'far Al-Kazim, 7th in succession to the Holy Prophet SAWA, whose holy shrine is visited by the millions of the Muslims every year in the Holy City of Kazimain, Iraq. Though he was imprisoned almost whole of his life by Haroon, the Abbasite caliph, he is accepted undisputedly the greatest of the people in obeying and worshipping Allah swt and imparting matchless knowledge to the humanity. H/B pgs. 703
