Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Abu Hamza al-Thumali was pious and righteous companion of Ali Zayn al-Abidin. He was also a companion of Muhammad al-Baqir and Ja'far al-Sadiq. Al-Najashi said: “He was the best of our companions and the most reliable of them in narration and tradition.” It was reported on the authority of Ali al-Ridha who said: “Abu Hamza at his time is like Salman at his time.” His supplication was accepted. His sons died martyrs with the great revolutionist, Zayd ibn Ali.