دولة الرسول(صلى الله عليه واله وسلم) واتجاهاتها السياسية والعسكرية في كتاب الطبقات الكبرى لابن سعد (ت 230هـ) == State of the Prophet (Allah bless him and his family) and their political and military in the book of the major classes of Ibn Sa'd ( 230 AH )