Al -Dhahabi mentioned it in the books in which if he is addicted to reading, reading and studying, it is really the world. Al -Bayhaqi mentioned many news more than twenty thousand news. The book is an important source of knowledge of texts and evidence in many jurisprudential issues, and the researcher may stand on issues in the books of jurisprudence whose evidence is rare in the six books, but it may not exist at all as the issue of translation in the skin. Al -Dhahabi said in it: "And his village was interrupted in order to combine and compose, so the great Sunnah worked in ten volumes, not for anyone like him."