In 1983, when he was at the Faculty of Law at King Abdul Aziz University in Jeddah, Saudi Arabia, Izzi Dien helped prepare the first contemporary declaration on conservation from an Islamic point of view.
It was later published by the International Union for the Conservation of Nature in English, French, and Arabic.
During the 1980s, he helped construct the legal and philosophical framework for Meteorology and Environmental Protection Administration in Saudi Arabia.
Izzi Dien stresses on the moral responsibilities that Islam places on humans in this article, concentrating on the key elements of Islam's classical legal tradition and their sources in the Qur'an and hadith that refer to the preservation and protection of natural resources.
The article later received a book length treatment and was published in 2000 as Environmental Dimensions of Islam.