The Imam assumed the divinely appointed position of Imamah in the year 148, when his father was martyred, making him the seventh Shiite Imam. He himself was martyred in either the year 183 Hijri or 186 Hijri.
Birthday Anniversary of Imam Hassan al-Mujtba ('a)
On this auspicious day Ayatollah Makarem Shirazi's Website releases a brief biography of the Imam ('a)
A Reflection on the Influential Teachings of Imam al-Hadi (ʿa) from the Viewpoint of Ayatollah Makarem Shirazi
The lecturers and students of the religious seminary can utilize the teachings of Imam al-Hadi (ʿa) in helping the people resolve their various ideological questions and doubts. Unfortunately, Imam al-Hadi (ʿa) has not been remembered like the other Imams (ʿa), nor have his teachings been given the attention that they truly deserve. We must do our best to remedy this shortcoming in ourselves and our institutions.
A Survey in to the Intellectual Legacy of Imam al-Rida (ʿa) from the Viewpoint of Ayatollah Makarem Shirazi
The scientific debates and discussions held by Imam ʿAli ibn Musā al-Rida (ʿa) are not a historical matter which only pertains to the past; they are rather a main source which should be utilized today for the comprehensive defense of Islam.