Scope and Structure of the Biographical Dictionary

The scope of Tarikh Baghdad reflects al-Khatib's ambition to document the full scholarly heritage of the Islamic world's greatest city. His criterion for inclusion was broadly biographical rather than narrowly local: he included anyone who had lived in Baghdad, studied there, visited the city, or was connected to its scholarly networks, regardless of their region of origin. This expansive criterion made Tarikh Baghdad a reference for Islamic scholarship across the entire Abbasid world.

The organization of the work is primarily alphabetical within the categories of the Arabic name system, though al-Khatib's arrangement is more complex than simple alphabetization. The work begins with a historical introduction describing Baghdad's founding, its physical layout, and its role in Islamic civilization before proceeding to the biographical entries.

Each biographical entry follows a recognizable format: full name and kunya (honorific name), lineage and tribal affiliation (where relevant), a note on the subject's teachers and the traditions he received from them, sample traditions the subject transmitted with full chains of narration, evaluations of the subject's reliability from earlier critics (sometimes quite detailed), and occasionally biographical anecdotes. The length of entries varies enormously: major figures like Abu Hanifa, Imam Ahmad ibn Hanbal, and al-Bukhari receive extended entries, while minor transmitters may be represented by only a few lines.

For the major legal and theological scholars of the Abbasid period — the founders and early authorities of the four legal schools — Tarikh Baghdad preserves biographical material and chains of transmission that are available nowhere else. Al-Khatib had access to written sources and oral traditions that were still within living memory when he composed the work but would otherwise have been lost.

His treatment of scholars associated with different legal and theological schools reflects the diversity of Baghdad's intellectual community: Hanafi, Maliki, Shafi'i, and Hanbali scholars all appear alongside Mu'tazili theologians and Ash'ari kalam scholars, making Tarikh Baghdad a cross-sectional portrait of Sunni Islamic intellectual life across three and a half centuries.