Intellectual discourse on classification of knowledge is a sub-topic in epistemology. In Islamic tradition, the philosophy of epistemology has its own uniqueness, besides being a distinguishing landmark in historical perspective between the Islamic and other civilizations. This study attempts to understand the concept of knowledge classification based on the perspectives of Abu Ḥāmid Muḥammad (hereafter mentioned as al-Ghazālī) (d. 1111CE) and Aḥmad bin Muḥammad Zayn (hereafter mentioned as al-Faṭānī) (d. 1908CE). In order to relate the purpose and objectives of knowledge to the Islamic Civilization, this study will identify the continuation of the idea on classification of knowledge in historical perspective. In addition, ...