Shaykh as-Sibâ‘ee takes us through the historical development of the Sunnah, from the early stages of revelation to the recording of the Sunnah during the era of the great imams of Hadith. Throughout that account, he highlights the contributions of the scholars in preserving the Sunnah and cleansing it from fabrications and lies. Shaykh as-Sibâ‘ee gives a clear account of the revolutionary methods and scholarly principles that were established in order to authenticate historical reports and narrations. The author shows us that the fruits of that endeavour were the preservation of the authentic Sunnah and the birth of the Hadith sciences. This book has been a perennial source of knowledge for Arabic-speaking students of Islam, for its clarity, readability, and insightful research. Now English-speaking students too have available to them this authoritative treatise on the Sunnah of our beloved Prophet Muhammad (may the blessings and peace of Allah be upon him). This book is translated into English here by Faisal Muhammad Shafiq.