Muawiyah I
During the Umayyad Caliphate period, during the reign of Muawiyah I, Sa'id ibn al-As undertook the conquest of Tabaristan, and with an army of 4,000 troops rushed there, and the whole war between him and Farrukhan the Great lasted for two whole years, but was postponed. The conflict lasted until Abbasid Caliphate until the attack of the Persian general Wandad Hurmuzd.