Al-Farabi's Political Theory for Jurisprudence

When Al-Farabi describes the ideal prophet-philosopher ruler, he is thinking of Muhammad as a primary example. The prophet-ruler is also a law-giver, which should put us in mind of Islamic law and its basis in Muhammad's revelation and teachings. When circumstances change, we must turn to jurisprudence for help with new questions or situations - but it clearly plays a much less exalted role than philosophy.