He is also known as al-Naqi (the pure) and al-Hadi (the guide). He was the Imam for a period of thirty-four years.
His shrine is in Samarra in Iraq. The dome and some minarets of his shrine were destroyed by terrorist attacks in 2006; and again, in 2008 other minarets of the shrine were also destroyed by another bombing. The shrine has been reconstructed from 2010 to 2015 by Iran.