Abu Hamid Muhammad ibn Muhammad ibn Ahmad al-Ghazzali, is a well known Sunni doctor surnamed Hajjatu ‘l-Islam (“the proof of Islam”). He was a native of Tus and for sometime a professor in the college at Naisapur. Born A.H. 450 (A.D. 1058), died A.H. 505 (A.D. 1111), at Tus. His exposition on the nature of God will be found in the article GOD. His great theological work is the Ihya’u ‘Ulumi ‘d-Sin.
Based on Hughes, Dictionary of Islam