King Fahd University of Petroleum and Minerals
El-Naggar wrote a book entitled "The Geological Concept of Mountains in the Qur'an" (2003, ). It was published by New Vision when El-Naggar was the chair of geology at King Fahd University of Petroleum and Minerals in Dhahran, Saudi Arabia. This book sold fairly well, leading El-Naggar to leave teaching and become the Chairman of Committee of Scientific Notions in the Qur'an.