In The Revival of the Religious Sciences, Al-Ghazali presents an encyclopedic treatment of Islamic knowledge, drawing from Qur’an, Sunnah, and classical scholarship to address both outward actions (such as prayer, fasting, charity) and inner states (such as sincerity, humility, and reliance on Allah). His aim was to “revive” the religious sciences by reminding believers of their spiritual purpose, correcting moral lapses, and presenting a holistic path toward a life that harmonizes belief, action, and inner transformation. Because of its depth and relevance, this work continues to be treasured by scholars and students alike.