Hadith of the Quran and Sunnah and believe in a different interpretation of this related hadith. The Sunnis and the Shi'as also disagree about what constitutes the "Sunnah". The Sunnis generally accept this hadith, but narrowly define "sunnah" as the sayings and deeds of Muhammad. Although some include the "implied approvals" of Muhammad. This hadith is considered "sahih" by the Sunni, as stated by following scholars: Shi'as reject this hadith and deem it to be a fabrication designed to distract from what they deem to be the real saying of Muhammad: the 'Hadith of the two weighty/precious things' ("Hadith al-Thaqalayn"). Since the Hadith about Quran and
Introduction to the Science of Hadith al-Kattānī. `Āʼishah bint `Abd al-Raḥmān said in the foreword of her edition of the "Introduction": His book about the sciences of hadith is the best known of his works without comparison, to the extent that it is sufficient to say, "the Book of Ibn al-Ṣalāḥ", the intent being understood due to its popularity and stature. With the previous scholars, its subject matter overcame it, thus being referred to as, "the Book of Ibn al-Ṣalāḥ about `Ulūm al-Ḥadīth" or as he referred to it in its opening pages, "the Book of Familiarity with the Types of `Ulūm al-Ḥadīth". It has become