Al-Fawz al-Kabīr fī Uṣūl at-Tafsīr – "The Great Victory, on Qur'ānic Hermeneutics" is a manual of the principles and subtleties of Qur'ānic tafsīr. In it the author outlines the five fundamental sciences that the Qur'ān contains: The science of polemics; Reminding others of the favours of Allah; The Reminder of Death and what is after it; and The Science of rulings. He also reviews the other sciences of tafsīr such as the circumstances of revelation (asbāb an-nuzūl), abrogating and abrogated āyāt (an-nāsikh wa'l-mansūkh) and the unusual words and phrases of the Qur'ān (gharā'ib al-Qur'ān), before concluding the book by looking at the extraordinary and miraculous aspects of the Noble Book, and a final chapter on the meanings of the letters of the Arabic alphabet.