Ibn Abī Ḥātim (1) and Abū Aḥmad al-Ḥākim both listed him, yet neither of them deemed him weak.
18 – Aḥmad ibn ʿĪsā, son of the martyr Zayd ibn ʿAlī, al-Ḥusaynī *
The shaykh and senior figure of Banū Hāshim.
Al-Madaʾinī said, “When Hārūn al-Rashīd learned of this man’s emergence at ʿAbbādān in 185 AH, he dispatched someone who deceived him with a pledge of allegiance and then seized him on a boat. Aḥmad escaped to Wāsiṭ, and all trace of him vanished.”
I say: He stayed in Basra among the Azd, living in obscurity until he died in 247 AH, at the age of eighty-nine (2).
19 – Abū Thawr Ibrāhīm ibn Khālid al-Kalbī ** (D, Q)
The imām, ḥāfiẓ, authoritative scholar, independent jurist, and mufti of Iraq; Abū Thawr al-Kalbī, the Baghdadi jurist.
He was also known as Abū ʿAbd Allāh.
(1) Al-Jarh wa-l-Taʿdil, 2/65.
(*) Maqatil al-Talibiyyin, p. 399; Al-Wafi bi-l-Wafayat, 7/271–272; Tarikh al-Tabari, 10/71.
(2) Al-Wafi bi-l-Wafayat, 7/272; it further states: “His period of concealment lasted sixty-two years, and no one else is known to have remained hidden for so long.”
(* *) Al-Tarikh al-Saghir, 2/372; Al-Jarh wa-l-Taʿdil, 2/97–98; Al-Fihrist, p. 265; Tarikh Baghdad, 6/65, 69; Tabaqat al-Fuqaha by al-Shirazi, p. 75; Al-Ansab, fol. 485b; Al-Lubab, 3/104–105; Wafayat al-Aʿyan, 1/26; Tahdhib al-Kamal, p. 54; Tadhhib al-Tahdhib, 1/35/2; Tadhkirat al-Huffaz, 2/512–513; Mizan al-Iʿtidal, 1/29–30; Al-ʿIbar, 1/431; Al-Wafi bi-l-Wafayat, 5/344; Tabaqat al-Shafiʿiyyah by al-Subki, 2/74, 80; Tarikh Ibn Kathir, 10/322; Tahdhib al-Tahdhib, 1/118–119; Al-Nujum al-Zahira, 2/301–302; Tabaqat al-Huffaz, p. 223; Khulasat Tadhhib al-Kamal, p. 17; Tabaqat al-Mufassirin, 1/7; Shadharāt al-Dhahab, 2/93–94.