23. Muhammad ibn Musa ibn al-Mutawakkil said: Abu al-Husayn Muhammad ibn Ja`far al-Asadi said: Muhammad ibn al-Husayn al-Sufi said: Yusub ibn `Aqil on the authority of Ishaq ibn Rahwayh said: When Abu al-Hasan al-Risa reached Naysabur, and intended to go from there to al-Ma’mum, some traditionists met him. They asked him, “O son of the Messenger of Allah! You are going from us without relating any Hadith to us so that we can derive benefit from you.” He was sitting in a camel-borne sedan, so he leaned his head out, and replied:

I heard my father, Musa ibn Ja’far say: I heard my father Ja’far ibn Muhammad say: I heard my father Muhammad ibn `Ali say: I heard my father `Ali ibn Husayn say: I heard my father Husayn ibn `Ali ibn Abu Talib say: I heard my father the Commander of the faithful `Ali ibn Abu Talib say: I heard the Messenger of Allah ﷺ say: I heard Jibra’il say: I heard Allah, Exalted be His Glory, say, `There is no god but Allah’ is my Fortress. Whoever enters My Fortress is safe from My Chastisement.” When the camel passed by, he called out to us, “That is subject to conditions. And I am among its conditions.”

The Compiler of this book explains: Among the conditions (of the statement; there is no god but Allah) is the acknowledgment that Al-Rida is an Imam appointed by Allah, the Mighty and High, over the people [`ibad], and the one to whom obedience is due.