In his History of Nisabur, the Imam al-Hakim (r.a), author of the Mustadrak al Hakim, recorded that when Imam ‘Ali al-Ridha’ (r.a), son of Imam Musa al-Kadhim (r.a) entered Nisabur, he was riding inside a veiled enclosure upon a grey mule. When he entered the city’s main marketplace, the two huffaz of ahadith, Imam Abu Zur’a ar-Razi (r.a.) and Imam ibn Aslam at-Tusi (r.a.), along with an uncountable number of students, stopped him and said, “O noble master, we ask you by the right of your noble and pure ancestors, to please expose your blessed face for us and narrate to us a hadith that you relate through your forefathers.”
Imam ‘Ali al Ridha’ (r.a) stopped his servant and ordered the veil to be removed, and everyone gazed upon his noble face. He had two long braids which fell on his shoulders, and the populace was looking upon him, some screaming with joy, others crying with humility, others kissing the feet of his mule or rubbing their faces on the dirt in front of him, and their voices grew.
So the ahadith scholars said, “O people, lower your voices and listen to that which will benefit you, and do not annoy us with your voices.” Imam Abu Zur’a (r.a.) and Imam at-Tusi (r.a.) readied themselves to record.
Imam ‘Ali al Ridha’ (r.a) began, “Our father, Musa al-Kadhim (r.a) narrated to us, from his father, Ja’far as- Sadiq (r.a), from his father, Muhammad al-Baqir (r.a), from his father, ‘Ali Zayn al-‘Abidin (r.a), from his father, Husayn (r.a) the martyr of Karbala, from his father ‘Ali ibn Abu Talib (r.a), who said, ‘My beloved and delight of my eyes, Rasulullah (s.a.w), said to me, Angel Jibril (a.s) said to me,
‘Allah Most High Said: ‘’Laa ilaha il Allah’ is My stronghold, whoever recites it enters My stronghold, and whoever enters My stronghold is safe from My Wrath.’’’
Then noble Imam al Ridha (r.a) lowered the veil over himself and moved on, and those who had ink were writing and were counted to be above 20,000.”
If people are impressed with the Golden Chain of Narrations of Imam Malik (r.a.) from Imam Nafi’ (r.a.) from ibn ‘Umar (r.a.), then this is the Diamond Chain of Narrations of healing and protection and blessing.
The Sufi Shaykh, Imam Abu al-Qasim al-Qushayri al-Shafi’i (r.a) said, “This chain of narrations reached one of the ‘umarah of the Samaniya, so he had it written in gold ink and advised that writing to be buried with him. After he died he was seen in a dream and asked ‘What did Allah Do with you?’
He replied, ‘Allah Forgave me because of my utterance of Laa ilaha il Allah [There is no Divinity except Allah], and my conviction that Muhammad is Rasulullah, the messenger of Allah (s.a.w.).’”