Hdatta or Haditha (Classical Syriac: ܚܕܬܐ Ḥdatta, Arabic: الحديثة al-Ḥadīt̲a), was a historical city on the East bank of the Tigris just below its confluence with the Upper Zab.
[2] The city became renowned as a bishopric centre of the Church of the East within the ecclesiastical province of Adiabene.
There existed also a substantial number of Jews, many of whom were converted to Christianity at the hand of its bishop Titus of Hdatta in the 6th century.
[3] The city prospered and expanded during the Abbasid period, and the fourth Caliph Al-Hadi made it his capital before his death.
Some of Hdatta's bishops, such as Abraham of Marga, rose to the rank of the Catholicos of the East, others such as Yeshudad of Merv authored important theological books.