Imam Reza was the eighth Imam in Shia Islam and is highly revered by Muslims. Born in 765 CE in Medina, he was the son of Imam Musa al-Kadhim and Fatimah al-Ma'sumah. He became the Imam at a young age and is known for his deep knowledge of Islamic theology, law, and philosophy. Imam Reza was appointed as the successor to the Abbasid caliph Al-Ma'mun, which was a unique position for an Imam. He spent much of his life in Mashhad, where he is buried. His shrine, the Imam Reza Shrine, is a significant pilgrimage site for millions of Muslims.