It seems that they regret for not participating in the massacre...

It seems that they regret for not participating in the massacre, so they now go after the grave! Mutawakkil enjoyed torturing the followers of the Ahlul Bayt; even the persons appointed by him as governor in Medina and Mecca were instructed to prevent people from being kind and courteous towards the Ahlul Bayt. In 234 A.H., Mutawakkil ordered Imam ‘Ali an-Naqi (a.s.) to be brought from Medina to Samarra where he was placed in a house next to the caliph’s garrison.

The Imam lived under constant surveillance until Mutawakkil was murdered by his own troops at the instigation of his own son, Muntasir. Muntasir bin Mutawakkil reversed the policies of his father towards the Ahlul Bayt (a.s.); he was kind and generous to them; he returned the property of Fadak to the descendants of Imams Hasan and Husayn (a.s.). Unfortunately his caliphate did not last for more than six months when he died in 248 A.H.

Musta‘in came to power after Muntasir and continued the oppressive policies of his ancestors. But soon his own Turkish troops rebelled against him and pledged allegiance to Mu‘tazz bin Mutawakkil whom they rescued from prison. Finally, Musta‘in was killed and Mu‘tazz become the caliph. It was during the reign of Mu‘tazz bin Mutawakkil that Imam ‘Ali an-Naqi was martyred by poisoning.

Two of the Imam One of the most distinguished of all the companions of Imam ‘Ali an-Naqi was ‘Abdul ‘Azim al-Hasani (a descendant of Imam Hasan) whose grave outside the city of Tehran has become a famous place for visitation ( ziyārat ). ‘Abdul ‘Azim had met and heard ahādith from the companions of the sixth, seventh and eight Imams; and he himself has narrated many ahādith from the ninth and tenth Imams.

Abu Hammād Rāzi narrates that once Imam ‘Ali an-Naqi (a.s.) told him that “whenever you have religious problems, go to ‘Abdul ‘Azim and also convey my salaams to him.” Once ‘Abdul ‘Azim al-Hasani came to Imam ‘Ali an-Naqi (a.s.) and said, “O son of the Prophet!

I would like to describe my faith to you so that if you agree with it then I will stay firm upon it till the last moment of my life.” When the Imam gave his approval, ‘Abdul ‘Azim described his faith as follows: “I believe that God is One; there is nothing like Him; He is free from ibtāl (i.e., saying that He is ‘nothing’) and tashbīh (i.e., comparing Him to a created thing).

Allāh has no body or figure; neither is He substance nor form; intead, He is the creator of body and figure, and of substance and form.