1. Arbaʻūn fī uṣūl al-dīn / Fakhr al-Dīn al-Rāzī. al-Arbaʻīn fī imāmat al-Ṭāhirīn / Muḥammad Ṭāhir ibn Muḥammad Ṭāhir ibn Muḥammad Ḥusayn al-Shīrāzī thumma al-Najafī. Creator: Rāzī, Fakhr al-Dīn Muḥammad ibn ʻUmar, 1149 or 1150-1210 Contributor: Bayḍāwī, ʻAbd Allāh ibn ʻUmar, -1286? Date: 1703 Language: Arabic Extent: 188 leaves: paper ; 293 x 204 (205 x 132) mm. bound to 293 x 210 mm.