The prelude to what is in the meanings and the meanings is an explanation of the hadiths raised in al -Muwatta, composed by Al -Hafiz Ibn Abd al -Barr, and the introduction is considered a unique book in its chapter, and a comprehensive encyclopedia in jurisprudence and hadith, and it is a book in which Ibn Abd al -Barr explained the book of al -Muwatta by Imam Malik bin Anas, but it arranged an arrangement Another differs from the arrangement of Imam Malik, as he arranged in a chain of transmission on the names of the elders of Imam Malik, whom he narrated from the hadiths in the hadiths, he collected the hadiths of each narrator in a chain of transmission on a limit dependent in their arrangement on the letters of the dictionary and translated into the narrators and the hadiths came out and explained them linguistically and jurisprudence, He mentioned the opinions of the scholars and jurisprudence, and it was limited to what was reported from the Messenger from the hadith, connected, discontinued, arrested, or sent, without the opinions and effects in al -Muwatta, and he has eliminated in the composition of the Book of Evidence for more than thirty years.