Tachkastan also known as Tashik in Tang Chinese and Tayyaye in Syriac was a 7th century CE Arab State in Al-Jazizah, Iraq. Its Manichean polity had a few Sadducee rulers among its Kings which included:

Hani ibn Qabisa d.628

Hormizd of Nisibis 4 yrs. d.632

Emir Ambrus 12yrs. d.644

King Tashik 12yrs. d.656

36 years of Fitna until 692

After Abdul Malik ibn Marwan conquered Abdallah ibn Al-Zubayir in 692 it turned into the Umyyad Caliphate.