Evauation of credit and importance of the 4 basic Shia narrative books from the View Pint of Ayatollah Namazi Shahioudi

The died Ayatollah Hajj Sheikh Ali Namazi Shahroudi (1333-1405 H, equal to 1914-1984) has provided detail and reasoning discussions in his book," Al -Alam ol- Hadieh Al- rafieh fi Etebar Kotob el Arbaeh" about the credit and Scientific values of the 4 grand and basic narrative collections (Al - Kafi, Tahzib, Estebsar, and Man la- Yahzarhol Faghih): with special attention to the Kafi book.In this essay the writer has provided the viewpoints of Ayatollah in 7 chapters. In these chapters you receive informations about the 400 narratives books; their authencity, and the necessity to have trust and confidence in those books.Then he reveals that these 4 books are extracted from those 400 basic narrative books; and those 4 authors had studied those 400 books in their libraries.Therefore, even if some of the narrators of the traditions were not henest and credited by 100%, since the authors have had the original books in their hands, they had no problem nor difficulty with the correct and exact form and dictation of the narrations. Then he makes 8 questions about the Al- Kafi, and provides the clearing answers.And lastly, he considers the attitude and kind attention of Allameh Majlesi to the traditions explained in Al - Kafi, which are deliberately observed in his book," Merat ol -Oghul "; and makes it clear that his excellency, Allameh Majlesi has also enough trust and confidence in the narrations mentioned in Al- Kafi. Keywords: Al - Kafi, evaluation of narrations of the infallible leaders of Islam/Kolaini, Mohammad bin Yaghoub/ the 4 basic narrative books /the Immamiya Shia traditions, 4th and 5th century / the 400 old narrative books /The history of Shia traditions/ The book " Merat Ol-Oghul" as an explanatory book to the book Al-Kafi / Majlesi, Mohammad Bagher/ Al - Kafi, inquiries and replies.