Rabi Abdullah
ʿAbd Allāh ar-Raḍī / ʿAbd Allāh al-Zakī (ar-Raḍī ʿAbd Allāh / al-Zakī ʿAbd Allāh) (True name: al-Ḥusayn ibn Aḥmad ibn ʿAbd Allāh ar-Raḍī/al-Zakī or al-Ḥusayn ibn Aḥmad ibn ʿAbd Allāh ibn Muḥammad ibn Ismāʿīl (ﺍلحسين بن أحمد بن عبد اللّه بن محمد بن إسماعيل) (born: 219AH, Died: 268AH, 881 AD, Askar, Syria, Imam: 225-268AH) surnamed "al-Raḍī/al-Zakī") is the tenth Ismaili Imam, Tenth Imam as per Ismaili/Mustali/Dawoodi Bohra is Imam Ḥusayn ibn Aḥmad ibn ʿAbd Allāh ar-Raḍī/al-Zakī" (Raḍī Abdullah). He is successor to the ninth Imam, Ahmed ibn Abdellah and father of next Imam Al Mahdi who was the founder of the Fatimid Caliphate.
The 8th to 10th Ismaili Imams were hidden from the public, because of threats from Abbasid caliphate, and were known by their nicknames. However, the Dawoodi Bohra in their religious text, Taqqarub, claim to have the true names of all 21 imams in sequence including those "hidden" imams: 8th Imam "ʿAbd Allāh ibn Muḥammad ibn Ismāʿīl al-Wafī" the true name/ (Wafī Ahmad), 9th Imam "Aḥmad ibn ʿAbd Allāh ibn Muḥammad at-Taqī" the true name/ (Taqī Muhammad), and the 10th Imam "al-Ḥusayn ibn Aḥmad ibn ʿAbd Allāh ar-Raḍī/al-Zakī" the true name/ '(Raḍī Abdullah)'
