During the early years of the reign of Shapur II (AD 309 or 310–379), Arabs crossed the Persian Gulf from Bahrain to "Ardashir-Khora" of Fars and raided the interior. In retaliation, Shapur II led an expedition through Bahrain, defeated the combined forces of the Arab tribes of "Taghleb", "Bakr bin Wael", and "Abd Al-Qays" and advanced temporarily into Yamama in central Najd. The Sassanids resettled these tribes in Kerman and Ahvaz. Arabs named Shapur II, as "Shabur Dhul-aktāf" after this battle.