wikishia:Featured articles/2024/20
Imām al-Riḍā's (a) designated succession of Ma'mūn is the event of Imam al-Rida (a) being appointed as al-Ma'mun al-'Abbasi's successor for caliphate. It occurred after Imam al-Rida (a) was summoned to Merv upon al-Ma'mun's insistence.
According to early sources, Imam al-Rida (a) moved from Medina to Basra. However, according to some later sources, the Imam (a) first went to Mecca; on this trip, he was accompanied with Imam al-Jawad (a). Imam al-Rida (a) said farewell to the Ka'ba, and then embarked on his journey. It is said that the Imam (a) departed to Basra on Muharram 15, 201/August 13, 816. At the command of al-Ma'mun, Raja' b. Abi Dahhak, a relative of Fadl b. Sahl—al-Ma'mun's minister—, accompanied Imam al-Rida (a) from Medina to Khurasan. According to al-Shaykh al-Mufid, al-Ma'mun's agent was Jaludi. Al-Ma'mun selected a specific direction for Imam al-Rida's (a) journey so that he does not cross places populated by Shi'as, since he was afraid of Shiite assemblies around Imam al-Rida (a). Particularly, he ordered that the Imam (a) should not cross Kufa, and should instead travel from Basra, Khuzestan, and Fars to Neyshabur....
Other featured articles: Nahj al-balagha (book) – Four Deputies – Imam al-Hasan b. Ali al-Askari (a)