The entire collection of the Hadith by Sahih Al-Bukhari. The Hadith are sayings of the Prophet Muhammad; this is one of the six major collections. Sunni Muslims view this as one of the three most trusted collections of hadith along with Sahih Muslim and Muwatta Imam Malik. In some circles, it is considered the most authentic book after the Quran. The book was compiled around 200 years after the death of Muhammad.