Al-Nasa'i was a prominent Islamic scholar and hadith compiler born in 829 CE in Nasa, a town in present-day Iran. He is best known for his work, Sunan al-Nasa'i, which is one of the six major collections of hadith in Sunni Islam. His compilation focuses on authentic sayings and actions of the Prophet Muhammad, emphasizing the importance of rigorous criteria for selecting hadith. Al-Nasa'i traveled extensively throughout the Islamic world, including regions like Mecca and Medina, to gather hadith from various scholars. His dedication to preserving the teachings of Islam has made his work highly respected among scholars and students of Islamic jurisprudence.