"Al-Shawaz fi 'Ilm Al-Qira'at: Irregular Cases in the Science of Recitations" is one of the lost books that have not reached us, and their fate remains unknown. However, it is by the grace of Allah that Imam Ibn Jinni, may Allah have mercy on his soul, relied on this book as a main reference in his work "Al-Muhtasib" among the list of references he used. The verifier of the book has confirmed the authorship of this main reference.

This study includes an introduction about Imam Ibn Mujahid, his life, lineage, childhood, and his journey in the pursuit of knowledge. It also highlights the Imam's scholarly position by listing his writings, showcasing his knowledge, and presenting the opinions of scholars regarding his work. The book discusses the irregular cases of recitations and references other works on irregular cases that were written before and after Imam Ibn Mujahid.

Furthermore, the verifier has included the entire text of the book on irregular cases, scientifically verified. This book has been authored by Dr. Ahmad Hatim Al-Samirrai