Complex sentence: For ten years, Imam Ali remained in the care of Muhammad, who kept him so close and inseparable that he was one with him in character, knowledge, self-sacrifice, forbearance, bravery, kindness, generosity, oratory and eloquence.
Split into simpler sentences: For ten years, Imam Ali remained in the care of Muhammad. The Prophet had kept him so close and inseparable that he was one with him in character, knowledge, self-sacrifice, forbearance, bravery, kindness, generosity, oratory and eloquence.