Isḥāq b. Muḥammad b. Aḥmad b. Abān b. Marrār

14 – Isḥāq b. Muḥammad b. Aḥmad b. Abān b. Marrār, known by the kunya Abū Yaʿqūb, al-Aḥmar. Corrupt in madhhab. Liar in narration. Fabricator of ḥadīths. What he narrates is not regarded, and his ḥadīth are not to be given importance. Al-ʿAyyāshī has an incident with him regarding his fabrication of ḥadīths that is famous.