Hadith of the Quran and Sunnah having been said during Muhammad's Farewell Sermon atop Mount Arafat after his Last Pilgrimage.(e.g. Malik Muwatta) Slightly varied versions are cited in many Sunni hadith works. Among those are: John Esposito explains the importance of the Hadith in Islam: "the Prophet Muhammad is seen as the "living Quran," the embodiment of God's will in his behavior and words. Sunni Muslims ... take their name from the "sunnah," meaning those who follow the example of the Prophet". Prof. Fatih Okumus refers to Muhammad as "the walking Qur’an," with the Sunnah giving an example to follow. As the sayings and deeds of
Introduction to the Science of Hadith al-Ṣalāḥ, in his "Introduction", codified the terminology established by those scholars before him based upon his reading of their works. He did so by citing some of those scholarly statements in the earlier works and deducing from them common terms and definitions in the manner of a scholar authoring a book of "fiqh" (jurisprudence). In this manner, his book was based upon those principles established by the earlier hadith specialists combined with some elements of "fiqh". An example of this would be the inclusion of the division of hadith into "mutawātir" and "āḥād". He therefore only mentioned the statements of