Wandad Hurmuzd stayed in Baghdad until the end of Hadi's rule, but finally returned to Tabaristan and another round of the uprising began.

These areas were sheltered by the high mountains of Alborz, against the attack of the large army of Arabs while advancing towards Khorasan.

At that time, Tabaristan was the most advanced and populated of the regions south of Caspian Sea, and was ruled by a dynasty of House of Ispahbudhan called the Dabuyids.

The presence of these dynasties proves that perhaps the events of Tabaristan were a reflection of an effort to restore the higher ranks of the Sassanid bureaucracy.

[4] Until around the year 759, the last Dabuyid ruler, Khurshid, was defeated by Abbasid forces and committed suicide after his lands were captured.