Sunan al-Nasa'i is one of the six major collections of Hadith in Sunni Islam, compiled by the Islamic scholar Ahmad ibn Shu'ayb al-Nasa'i in the 9th century. It contains thousands of sayings and actions of the Prophet Muhammad, serving as a crucial source for Islamic law and ethics. The collection is known for its rigorous methodology in selecting authentic narrations, emphasizing the importance of reliable chains of transmission. Sunan al-Nasa'i is particularly valued for its focus on the practical aspects of Islamic teachings, making it a significant reference for scholars and students of Islam.