Allah Almighty endowed our Ummah with distinguished figures and select elite, at its early stage, who devoted themselves to serving the pure Sunnah. They gathered it directly from those who heard it and collected it from those who memorized it. To this end, they expended their wealth and lifetime. Thanks to their great effort, we have many huge books that comprise the legacy of our Prophet (may Allah's peace and blessings be upon him). It is because of this that they merit the pleasure of Allah Almighty and deserve gratitude and honor. Those widely renowned books include the following: Al-Jāmi' Al-Sahīh by Al-Bukhāri Al-Jāmi' Al-Sahīh by Muslim Jāmi' Al-Tirmidhi Sunan Abu Dāwūd Sunan Al-Nasā'i Sunan Ibn Mājah