39 Chapter 5 Kilwa Ruled by the Sultans of al-Wāsil Dynasty One day, Sultan Ali al-Wāsil visited Mombasa and very much liked it. So, he appointed his son Muhammad ibn Ali ruler of Mombasa. Two and half years later, Muhammad died. He was succeeded by his brother al-Hassan Sabħa ibn Ali, whose rule also ended with his death four and half years later. Sultan Ali ibn al-Hassan ibn Ali himself remained as the ruler of Kilwa for forty years.