The masterpiece of Imam al-Ghazali, unquestionably one of the greatest thinkers and theologians of Islam. He reflects on the totality of his studies in Sufism, skepticism, philosophy, and spiritual retreat. This work, known in English as "Revival of the Sciences." Volume 1 - Book of Worship, Volume 2 - Book of Worldly Usages, Volume 3 - Book of Destructive Evils, Volume 4 - Book of Constructive Virtues.

A famous work of Abu Hamed al-Ghazali(1058-1111 CE), in a four volume set containing guidelines for acts of worship and guidelines for the Muslim individual in daily life. Imam Ghazali covers the ethical, and inner dimensions of spiritual life as well as the outer dimensions. His masterpiece ' The Revival of Religious Sciences' is considered to be one the best works of its kinds and set the standard for later works of its nature.