Shapur II's Arab campaign

[1] During the childhood of Shapur II, Arab nomads made several incursions into the Sasanian homeland of Pars, where they raided Gor and its surroundings.

[2] He primarily campaigned against the Iyad tribe in Asoristan and thereafter he crossed the Persian Gulf, reaching al-Khatt, a region between present-day Bahrain and Qatar.

Shapur II reportedly killed a large number of the Arab population and destroyed their water supplies by stopping their wells with sand.

[1] The Zoroastrian scripture Bundahishn also mentions the Arabian campaign of Shapur II, where it says the following: "During the rulership of Shapur (II), the son of Hormizd, the Arabs came; they took Khorig Rūdbār; for many years with contempt (they) rushed until Shapur came to rulership; he destroyed the Arabs and took the land and destroyed many Arab rulers and pulled out many numbers of shoulders".

[1] Colonies of Persian officials and soldiers were settled in new garrisons along the Arabian coastlands of the Persian Gulf, especially in Oman's strategic coast in Al Batinah Region, including the tip of the Musandam Peninsula, Sohar, and Rustaq.