Hadith’s are a collection of traditions containing sayings/actions of the Prophet Muhammad that, with accounts of his daily practice (the Sunnah), constitute the major source of guidance for Muslims apart from the Quran.During the first few decades after the Prophet Muhammad’s death, those who directly knew him (known as the Companions) shared and collected quotations and stories related to the Prophet’s life. Within the first two centuries after the Prophet’s death, scholars conducted a thorough review of the stories, tracing the origins of each quotation along with the chain of narrators through whom the quotation was passed. Those which were not verifiable were deemed “weak” or even “fabricated,” while others were deemed “authentic” (sahih) and collected into volumes. The most authentic collections of hadith include Sahih Bukhari, Sahih Muslim, and Sunan Abu Dawud.