The Kaisaniyah Sect

It is narrated from my father from Ahmad bin Idrees from Muhammad bin Ahmad bin Yahya from Ibrahim bin Hashim from Abdus Samad bin Muhammad from Hannan bin Sudair from Abu Ja’far Imam Muhammad Baqir عليه السلام that he said: “When I came to Muhammad bin Hanafiyyah, he had lost the ability to speak. I asked him to make a will but he couldn’t speak. I ordered a copper vessel used to wash hands to be brought. It was brought near him after putting dust in it. I ordered him to inscribe his will on the utensil. He inscribed his will on that dust and I copied it on a piece of paper.”