1-Scope of Jurisprudential Discussions and Verses of Rulings.2-Characteristics of Jurisprudential Discussions and Verses of Ruling.3-Background.3.1-The Prophet (s).3.2-Ahl al-Bayt (a).3.3-The Companions and the Followers.3.4-Shi'a Commentaries.3.5-Hanafi Commentaries.3.6-Shafi'i Commentaries.3.7-Maliki Commentaries.4-Methods.5-Principles.5.1-Validity of the Apparent Text of the Qur'an.5.2-Legislative Nature of the Qur'an.5.3-Life Conduct of the Prophet (s) and the Ahl al-Bayt (a).5.4-Lexicon and Literary Rules.5.5-Usul al-Fiqh.5.6-Occasion of Revelation.5.7-Differences of Recitations.5.8-The Abrogating and the Abrogated.5.9-Interpreting the Qur'an based on the Qur'an.6-References.