Kitab Al-Irshad Ila Qawati Al-Adilla Fi Usul Ati Tiqad, commonly known simply as Al-Irshad ("The Guide"), is a major classic of Islamic theology

Islamic theology

Islamic theology is a branch of Islamic studies regarding the beliefs associated with the Islamic faith. Any religious belief system, or creed, can be considered an example of aqidah. However, this term has taken a significant technical usage in Islamic history and theology, denoting those...

. Its author, Al-Juwayni

Al-Juwayni

Imam al-Haramayn Dhia' ul-Din Abd al-Malik ibn Yusuf al-Juwayni al-Shafi'i was a Sunni Shafi'i hadith and Kalam scholar...

, was the leading Ash'ari

Ash'ari

The Ashʿari theology is a school of early Muslim speculative theology founded by the theologian Abu al-Hasan al-Ash'ari...

 (Sunni) theologian of his time; he was more famous for his many important treatises on the principles of law, and for having been the teacher of the great Ghazali. His writings in the field of theology, especially Al-Irshad, represent a high point of the development of theology in the then contemporary Islamic world. In Al-Irshad Al-Juwayni systematically set out what the author considered the sure proofs for the principles of any discourse about God, His attributes, about what must be said concerning Him, and how the human being should understand what is possible in respect to God.