Subhi Al-Saleh's seminal work, 'Investigations into the Sciences of the Quran,' offers an unparalleled deep dive into the foundational disciplines essential for understanding the Holy Quran. This book meticulously explores various branches of Quranic studies, including its revelation, collection, recitation, interpretation (Tafsir), abrogation (Naskh), and the historical contexts of its verses. Al-Saleh provides critical insights into the methodologies employed by classical and contemporary scholars, making this a crucial resource for students, academics, and anyone seeking a comprehensive grasp of the Quran's multifaceted intellectual legacy. It addresses complex issues with clarity and scholarly rigor, consolidating essential knowledge for profound engagement with Islam's sacred text.