Name: Ja'far ibn Muhammad ibn al-Hasan ibn al-Mustafid

Fame: Ja'far ibn Muhammad al-Firyabi

Kuniya: Abu Bakr

Lineage: al-Firyabi

Occupation: Judge, Qadi of Dinur

Rank: Trustworthy Hadith Scholar

Lived in: Faryab, Iraq, al-Jazira, Hijaz, Baghdad, Transoxiana, al-Sham, Egypt, Khorasan

Abu al-Walid al-Baji: Trustworthy, Pious

Ahmad ibn Kamil al-Shajari: Prolific in Hadith, Reliable, Trustworthy

al-Khatib al-Baghdadi: One of the vessels of knowledge and among the people of knowledge and understanding, he was trustworthy, reliable, and a Hadith scholar

al-Dhahabi: Preserver, Sound

Abd al-Hayy ibn al-'Imad al-Hanbali: Imam, Hadith Scholar, Eminent