Complex sentence: He was the elder son of Ali and Muhammad's daughter, Fatimah, who is respected by Sunni Muslims as the beloved grandson of Muhammad, and by the Shiite Muslims as a member of Ahl al-Bayt and Ahl al-Kisa.
Split into simpler sentences: He was the elder son of Ali and Muhammad's daughter, Fatimah. Muslims worship him as the grandson of Muhammad and a member of Ahl al-Bayt and Ahl al-Kisa.