Ibn Sa'd

Ibn Sa'd was a renowned Islamic scholar and historian from the 9th century, best known for his detailed biographical work called "Kitab al-Tabaqat al-Kabir" (The Book of Major Classes). This extensive collection documents the lives, achievements, and sayings of early Muslims, especially the Prophet Muhammad and his companions. His work offers valuable insights into early Islamic history and the development of its community, making him a significant source for understanding the lives of key figures and the origins of the Islamic faith.