امام هادی علیه‌ السلام

Imam, al-Naqi, al-Hadi, Samarrah, Imamate, Historians
Imam Hadi was martyred of poisoning on third day of Rajab by the Abbasid caliph Mu'taz in 254 A.H. at Samarrah in Iraq and is buried there. The Holy Imam (A.S.) was 42 years old at the time of his martyrdom.