It is clear by studying the biography of Hesham that he not only acquired knowledge, fought for the cause of religion and conducted campaigns and debates against the infidels and unbelievers in Wilayah (trusteeship), but also he was active in the business of selling fabrics. As Hesham himself states: One day while he was busy selling the Saberi fabric under a shaded tree, the seventh Imam Musa ibn Ja'far [a] happened to ride by. He turned his face to me and said, "O Hesham, selling something in the shadows is similar to cheating, and cheating is unlawful in Islam."
 A Kind of delicate and costly silk which was woven in those days in Sabur, Persia, and it was very difficult to distinguish the complete characteristics of that cloth in darkness and shadow.
 Al Fehrist of Ibn Nadim Hassan, a poet during the time of the Prophet [s] whose odes including "Ghadirieh", are famous.