The book of the weak and the left of the authority of Al -Hafiz Abu Abdul Rahman Ahmed bin Shuaib, nicknamed Al -Nasa'i, which is a book attached to the book of the small weak of Al -Bukhari in which the women collected the narrators who were wounded and between their condition and attributed them in short. And it is among the most important books that were classified in the wound and the modification that the modernists depend on Ibn Hajar, Al -Dhahabi and Al -Albani ... It is a book that was classified by arranging the Arabic alphabet and divided it into chapters.