B. Majd al-Din Abu al-Sa'adat al-Mubarak ibn Muhammad ibn 'Abd al-Karim: He is al-Mubarak ibn Muhammad ibn Muhammad ibn 'Abd al-Karim al-Jazari, al-Shaybani. He was born in the year five hundred and forty-four (544 AH). Al-Hafiz al-Dhahabi described him, saying: "The judge, the chief, the scholar, the preeminent, the unique, the eloquent." Imam Abu Shama said: "He studied hadith, knowledge, and literature, and he was a chief and an advisor. He was pious, wise, dignified, and possessed of virtue and beneficence." He authored "Jami' al-Usul," "al-Nihayah," and a commentary on "Musnad al-Shafi'i." His brother 'Izz al-Din 'Ali was the author of "al-Tarikh," and their brother al-Sahib Diya' al-Din was the author of the book "al-Mathal al-Sa'ir" on literature. He died in Mosul in the year six hundred and six (606 AH). (1)

Al-Hafiz al-Dhahabi said: "The aforementioned Jazirah is a city built by Ibn 'Umar, who is 'Abd al-'Aziz ibn 'Umar al-Barqa'idi," as stated by Ibn Khallikan. He also said: "I saw in the 'Tarikh' of Ibn al-Mustawfi, in the biography of Abu al-Sa'adat al-Mubarak ibn al-Athir — meaning Majd al-Din — that he was from the Jazirah of Aws and Kamil, the two sons of 'Umar ibn Aws al-Taghlibi. And it was said: rather, it is attributed to the governor of Iraq, Yusuf ibn 'Umar al-Thaqafi. And God knows best." (2)

C. 'Izz al-Din Abu al-Hasan 'Ali ibn Muhammad ibn 'Abd al-Karim: He is 'Ali ibn Muhammad ibn 'Abd al-Karim ibn 'Abd al-Wahid al-Jazari, al-Shaybani, the brother of al-Mubarak, author of the book "al-Tarikh al-Kabir," titled "al-Kamil," and author of the book "Ma'rifat al-Sahabah." He was born in the year five hundred and fifty-five (555 AH). Al-Hafiz described him as: --------------------------------------------
(1) Al-Dhahabi in "Siyar A'lam al-Nubala'" 21/488-491.
(2) The same reference 22/355.