Thus, he ended the allegiance of death by poisoning al-'Imam al-Rida (A).

Thus, he ended the allegiance of death by poisoning al-'Imam al-Rida (A). In this way, al-'Imam al-Rida (A) became another one of those for whom Allah seeks retaliation (tha'r) in the battlefield between Islam and error. Tears were shed for him, hearts grieved for him, and he became an excellent model for those striving in the way of Allah and the oppressed.

When we see the similarity between al-'Imam al-Rida's acceptance of the heir apparency and al-'Imam al-Hasan's (A) acceptance of it, and then the similarity between al-'Imam al-Rida's acceptance of the allegiance of death and the decision to embrace martyrdom by al-'Imam al-Husayn (A), we are in the final stage of the study.

When estimating the effects on Islamic society during the era of al-'Imam al-Rida (A), of its immediate and urgent aims, and the greater goals of the Islamic movement in the history of the Imams of the (A), we also see a resemblance between the acceptance of heir apparency by the Imam and the treaty of Hudaybiyyah.

The Messenger of Allah (S) complied with the offer of the Quraysh - just as al-Rida (A) accepted al-Ma'mun's offer - which amazed many of his companions, angered others, and was accepted by those among them who possessed awareness. Some saw in the action of the Messenger of Allah (S) a granting of undeserved concessions to the Quraysh, but the outcome of the treaty of Hudaybiyyah was a victory, in the near future, of the strategic objectives of Islam.

The acceptance of the heir apparency resulted in a victory, in the near future, of immediate and urgent aims, and of the strategic objective of al-'Imam al-Rida, in view of his being the guardian of Islam. The former was one of the battles of Islam against disbelief (kufr) on the level of revelation (tanzil), and the latter was one of the battles of Islam against disbelief on the level of interpretation (ta'wil).

May Allah's blessing be on al-'Imam al-Rida (A) and his fathers and his descendants, the pure, among the former people and the latter. Praise be to Allah, the Lord of the worlds.…