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
Introduction to the Science of Hadith authored an abridgement: The following have set "Introduction" to verse, adding some content in the process: The numerous editions of the "Introduction" in its original Arabic include two of the more reliable: The "Introduction" has been translated into English and published as "An Introduction to the Science of Hadith", by Eerik Dickinson, as part of the Great Books of Islamic Civilization series. The translator has provided a biography of Ibn al-Ṣalāḥ derived from numerous sources, in addition to copious footnotes throughout. It is published by Garnet Publishing Limited, Reading, 2006, 356 pgs. Introduction to the Science of Hadith (Ibn al-Ṣalāḥ's)