- Analytical approach to the study of historical narrations, - Referring to the main Shiite sources, including those offered by the contemporary Shiite scholars, - Making refrences to the biography of the Prophet of Islam (P.B.U.H) and Quranic verses, - Fluent language, taking advantage of the most authoritative sources, using transliteration system for names and expressions including Arabic words, well-documented appendices, a comprehensive bibliography, and a rich glossary.