This volume, Part 2 of 'Explanation of Al-Waseet in Arabic Language, Level Four' by Iyad Mansour, is an essential textbook for advanced learners. It systematically builds upon previous knowledge, delving into complex grammatical structures, advanced syntax (Nahw), and morphology (Sarf). The book offers detailed explanations, numerous examples from classical and modern texts, and practical exercises designed to solidify understanding and application. It is an indispensable tool for university students specializing in Arabic language and literature, aiming to achieve a high level of proficiency and a deep appreciation for the intricacies of the language.