Complex sentence: The basic text of Islam is the Quran, believed by Muslims to represent the direct revelation of Allah (i.e., God) to his prophet are reports of Muhammad's sayings and deeds from those close to him in his lifetime.
Split into simpler sentences: The basic text of Islam is the Quran, believed by Muslims to represent the direct revelation of Allah (i.e., God) to his prophet Muhammad. The hadith are reports of Muhammad's sayings and deeds from those close to him in his lifetime.