Iranian law is primarily based on Islamic principles, particularly Sharia, which is derived from the Quran and the teachings of the Prophet Muhammad. The legal system combines both religious and civil law, with the Islamic Republic of Iran established after the 1979 revolution. Courts in Iran handle various cases, including criminal, civil, and family law, often influenced by religious interpretations. The Guardian Council plays a crucial role in the legislative process, ensuring that laws comply with Islamic principles. Additionally, the Supreme Court oversees the judicial system, while the Judiciary is responsible for enforcing laws and administering justice throughout the country.