The first of his works to be translated into English, Risalat al-Tauhid, represents the most popular and systematic of Muhammad 'Abduh's work, and one of the most influential Muslim theological writings of the contemporary period. The essentials of 'Abduh's modernist thought are contained in this treatise.The first of his works to be translated into English, Risalat al-Tauhid, represents the most popular and systematic of Muhammad 'Abduh's work, and one of the most influential Muslim theological writings of the contemporary period. The essentials of 'Abduh's modernist thought are contained in this treatise.