Rabi Abdullah / Husain ibn Ahmed( born: 219AH, Died: 268AH, 881 AD, Askar, Syria, Imam: 225-268AH) is the tenth Ismaili

Ismaili

' is a branch of Shia Islam. It is the second largest branch of Shia Islam, after the Twelvers...

 Imam

Imamah (Shi'a Ismaili doctrine)

The Ismaili view on the Imamah differs from the Twelver Shi'a view, in particular because the Imam in Ismailism is the Noor of God . Ismailis believe that the Noor of God is present in the Imam, and that there is only a Ẓāhirī difference between each one...

, surnamed az-Zaki. Tenth imam as per Ismaili

Ismaili

' is a branch of Shia Islam. It is the second largest branch of Shia Islam, after the Twelvers...

/Mustali/Dawoodi Bohra

Dawoodi Bohra

Dawoodi Bohra is a subsect of Ismāʿīlī Shīʿa Islām. While the Dawoodi Bohra is based in India, their belief system originates in Yemen, where it evolved from the Fatimid Caliphate and where they were persecuted due to their differences from mainstream Sunni Islam...

 is Imam Husain ibn Ahmed. He is successor to the ninth imam, Ahmed ibn Abdellah

Taqi Muhammad

Muhammad at-Taqi is the ninth Ismaili Imam . As the Imam, he was the supreme spiritual leader of the Ismaili community from his appointment until his death. The Nizari and Mustaali trace their Imamate lines from him and his descendants who founded the Fatimid Empire...

 and father of next Imam Al Mahdi who was first 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 Abdillah-ibne-Mohammad the true name/ (Wafi Ahmad)

Wafi Ahmad

Ahmad al- Wafi is the eighth Ismaili Imam . He was surnamed al-Wafi. As the Imam, he was the supreme spiritual leader of the Ismaili community from his appointment till his death...

, 9th Imam "Ahmed-ibne-Abdillah (Taqi Muhammad)

Taqi Muhammad

Muhammad at-Taqi is the ninth Ismaili Imam . As the Imam, he was the supreme spiritual leader of the Ismaili community from his appointment until his death. The Nizari and Mustaali trace their Imamate lines from him and his descendants who founded the Fatimid Empire...

, and the 10th Imam Husain-ibne-Ahmed(Rabi Abdullah)

Rabi Abdullah

Rabi Abdullah / Husain ibn Ahmed is the tenth Ismaili Imam, surnamed az-Zaki. Tenth imam as per Ismaili/Mustali/Dawoodi Bohra is Imam Husain ibn Ahmed...

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