Aat-Tai was the Abbasid Caliph of Baghdad who ruled for 17 years from 974 to 991. He succeeded his father Caliph Al-Muti as the twenty-fourth Abbasid Caliph. During his rule, the Abbasid dominions further shrunk in extent. Syria and Hijaz were occupied by the Fatimid. The Abbasid Empire was no longer in the position to make any conquests.
During his Caliphate, Syria was torn by contending factions — Fatimid, Turkish, and Carmathian; while the Buwayhid dynasty was split up into parties that were fighting among themselves. To top this all off, the Byzantine Emperor John Tzimisces stormed the east in a victorious campaign in 975. After holding the office for seventeen years, a?-?a?i? was deposed in 991 by the Buwayhid emir Baha' al-Dawla.
Depicted here is gold Dinar Minted from Al Basra (982/3 AD) in Abbasid-style legends. Add al-Dawla as Governor and Amir al-umara of Caliph At-Tai. (cited At-Ta’i name).
Image Source: Wikipedia.org