The research aims to study one of the subjects of the Arabic language, which is (the employment of Quranic evidence by AlGhalayiny in his comprehensive Arabic lessons book: adverb as a case study - a grammatical study. The search consists of two sections, In the first topic, I mentioned a brief overview of Sheikh Mustafa Al-Ghalayini, the author of the book ``The Arabic Lessons Collector.'' His approach to writing was easy in style and clear meanings brought the rules closer to the understanding of the learners and put the effort away from the teachers. The second section focused on the subject of (the case), its conditions, properties, work, and conjugations, and concluded with the most important results and an index of sources and references.