Abu Tahir al-Sa'igh

Abu Tahir was the second Nizari da'i in Syria sent by Hassan-i Sabbah, replacing al-Hakim al-Munajjim, and enjoying alliance with Ridwan.

At this time, the authority over the upper Orontes valley was shared between Janah al-Dawlah of Homs, Munqidhites of Shaizar, and Khalaf ibn Mula'ib, the Fatimid governor of Apamea based in its citadel Qal'at al-Mudhiq.

[3] In 1111, an abortive assassination attempt against Abu Harb Isa ibn Zayd, a wealthy Aleppine Persian, caused a general public resentment of the Nizari Ismailis in Aleppo.

During the short reign of his young son Alp Arslan al-Akhras, who ceded the Balis fortress on the Aleppo–Baghdad road to Abu Tahir.

During his anti-Nizari campaign, the Seljuq sultan Muhammad I Tapar sent Sa'id ibn Badi', the rais of Aleppo, to turn Alp Arslan against the Nizaris.