Sahih al-Bukhari () is a hadith collection and a book of sunnah compiled by the Persian scholar Muḥammad ibn Ismā‘īl al-Bukhārī (810–870) around 846. Alongside Sahih Muslim, it is one of the most valued books in Sunni Islam after the Quran. Both books are part of the Kutub al-Sittah, the six major Sunni collections of hadith of the Islamic prophet Muhammad. The book is also revered by Zaydi Shias. It consists of an estimated 7,563 hadith narrations across its 97 chapters. Content Sources differ on the exact number of hadiths in Sahih al-Bukhari, with definitions of hadith varying from a prophetic tradition or sunnah, or a narration of that tradition. Experts have estimated the number of full-isnad narrations in the Sahih at 7,563, with the number reducing to around 2,600 without considerations to repetitions or different versions of the same hadith. Bukhari chose these narrations from a collection of 600,000 narrations he had collected over 16 years. The narrations are distributed across 97 chapters covering fiqh (Islamic jurisprudence), among other subjects. Each chapter contains references to relevant verses from the Quran. It provides proper Islamic guidance in almost all aspects of Muslim life such as the method of performing prayers and other actions of worship directly from Muhammad. Development Collection It is reported that Bukhari traveled widely throughout the Abbasid Caliphate from the age of 16. Bukhari found the earlier hadith collections including both ṣaḥīḥ (authentic, sound) and hasan narrations. He also found that many of them included daʻīf (weak) narrations. This aroused his interest in compiling hadith whose authenticity was beyond doubt. What further strengthened his resolve was something his teacher and contemporary hadith scholar Ishaq Ibn Rahwayh had told him. Bukhari narrates, "We were with Ishaq Ibn Rahwayh who said, "If only you would compile a book of only authentic narrations of the Prophet." This suggestion remained in my heart so I began compiling the Sahih." Bukhari also said, "I saw the Prophet in a dream and it was as if I was standing in front of him. In my hand was a fan with which I was protecting him. I asked some dream interpreters, who said to me, 'You will protect him from lies.' This is what compelled me to produce the Sahih." Bukhari imposed four conditions the narrators of a hadith must meet, in order for the narration to be included in his Sahih: being just,