This is a book of Hadith books in which the author collected hadiths agreed upon in Sahih Al-Bukhari and Muslim, which totaled 2006 hadiths (some sources mention that it is 1906, but what the author mentioned in the introduction to the book is 2006). He chose his texts from Sahih al-Bukhari and from the narrations that are closest to the text contained in Sahih Muslim. And it became clear after the narration of each hadith its place in Sahih al-Bukhari by mentioning the name of the book and the title of the chapter with its numbers. As for the order of the book, he followed the order of Sahih Muslim, so he took from it the names of his books, which amounted to fifty-four books, the first of which is the Book of Faith and the last of which is the Book of Interpretation.