Hadith of the Quran and Sunnah Sunnah was said by Muhammad in front of the larger gathering during his Farewell Sermon, and the Hadith about Quran and Ahl al-Bayt was said by Muhammad in front of the smaller gathering at Ghadir Khumm, the Shi'as believe that only the 'Hadith of the two weighty things' is authentic. At the same time, Shi'as do agree with the meaning of the Hadith, even if they deem it a fabrication. The Shi'as believe in following the Sunnah of Muhammad, but they say that this is only possible via the Ahl al-Bayt (Muhammad's family). The Shi'as believe that Muhammad said "Hadith
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)