Shia Islam's key beliefs, known as the "Five Roots of Usul ad-Din," are: Tawhid (Oneness of God), Adl (Divine Justice), Nubuwwah (Prophethood), Imamah (Leadership), and Al-Ma'ad (Resurrection). These beliefs form the foundation of Shia Islamic faith and influence all aspects of Shia life. Here's a more detailed explanation: 1. Tawhid (Oneness of God): Shia Muslims, like all Muslims, believe in the absolute oneness and uniqueness of Allah. They believe He is the sole creator, sustainer, and ruler of the universe. 2. Adl (Divine Justice): This belief emphasizes God's absolute justice and wisdom. Shia Muslims believe that God is fair and will judge all of humanity on the Day of Judgment based on their actions and beliefs. 3. Nubuwwah (Prophethood): Shia Islam recognizes the importance of prophets as messengers of God. They believe that God sent prophets to guide humanity, with Muhammad being the final prophet. 4. Imamah (Leadership): This is a distinctive Shia belief, asserting that after the Prophet Muhammad, leadership of the Muslim community was divinely appointed to his designated successors, the Imams, starting with Ali ibn Abi Talib. 5. Al-Ma'ad (Resurrection): Shia Muslims believe in the resurrection of the dead on the Day of Judgment, where they will be judged by God.