Ibn Ishaq's 'Al-Sira al-Nabawiyya', or 'The Prophetic Biography', is widely considered the earliest and most comprehensive surviving biography of the Prophet Muhammad. Originally compiled in the 8th century, this monumental work serves as a foundational text for understanding the life, teachings, and campaigns of the Prophet. It meticulously chronicles events from before Muhammad's birth through his prophethood, the Hijra, the battles, and his passing. While the original manuscript is lost, its content is largely preserved through the recension by Ibn Hisham. This book offers invaluable insights into early Islamic history, the socio-political landscape of Arabia, and the development of the nascent Muslim community, making it essential reading for scholars and enthusiasts alike.