20. Ishaq has said that narrated to me Muhammad ibn al-Rabi‘ al-Sa’i has said the following. “I debated a man who believed in dualism in Ahwaz them went to Surra man Ra‘a. However, his words were stuck to my heart. I was sitting in front of the door of Ahmad al-Khadib that I saw abu Muhammad coming from the house for public gathering. It was the house wherein on a certain day the Sultan would allow the common people to visit him. The Imam looked at me and made a gesture with his forefinger say One, single and only One. I fainted and fell on my face.”