Hadith of the Quran and Sunnah Hadith of the Quran and Sunnah Several hadith (oral tradition about the words and deeds of the Islamic prophet Muhammad) indicate the importance as sources of Islam not only the Quran (the revelation of God to Muhammad, infallible but containing compressed information), but also of the Sunnah of the Islamic prophet Muhammad (a detailed explanation of the everyday application of the principles established in the Qur'an that is based on ahadith). One of these hadith quotes Muhammad as saying: "I have left among you two matters by holding fast to which, you shall never be misguided: the Book of God
Criticism of Hadith highly of Mutawatir: However, orthodox hadith scholars find non-mutawatir hadith adequate. "According to the majority of the ulama of the four Sunni schools, acting upon ahad is obligatory even if ahad fails to engender positive knowledge. Thus, in practical legal matters," but not in "matters of belief", "a preferable "zann" [meaning, speculative] "is sufficient as a basis of obligation." Ibn al-Salah ( (d. 643/1245), "one of the most distinguished traditionists of the muta'akhkhirun", argues (according to Farooq), that because mutawatir type hadith is rare, "for much of Islamic praxis, certainty of knowledge is neither feasible nor required. Rather, probable or