In the 7th century AD, Omanis came in contact with and accepted Islam. The conversion of Omanis to Islam is ascribed to Amr ibn al-As, who was sent by the prophet Muhammad during the Expedition of Zaid ibn Haritha (Hisma). Amer was dispatched to meet with Jaifer and Abd, the sons of Julanda who ruled Oman. They appear to have readily embraced Islam.