The Imāms ` Alī al-Hādī ( `` an-Naqī '' ) and Hassan al - ` Askarī lived under house arrest in the part of Samarra that had been Caliph al-Mu ` tasim 's military camp ( ` Askaru l-Mu ` tasim ) .
The Imāms ` Alī l-Hādī ( also known as an-Naqī ) and Hassan al - ` Askarī lived under house arrest in the part of Samarra that had been Caliph al-Mu ` tasim 's military camp ( ` Askaru l-Mu ` tasim ) .