This article discusses the concept of al-Qanun al-Kulliy as a philosophy in under-standing the meaning of the verses of the Qur'an and Hadith of the Prophet (S.A.W), both of which are needed in understanding faith-related issues. The concept here is that sense of purpose, considered priority in outward evidences of Islamic law, which has drawn criticism from Islamic scholars who cling to the methods of the Salaf al-Salih. To understand the concept of al-Qanun al-Kulliy, this paper relies on the analysis of some related sources, the study of which has shown that al-Qanun al-Kulliy is a philosophy in understanding matters of faith that was adopted by some theologians (Ahl al-Kalam). The paper also shows that Ibn Taimiyyah and his student, Ibn al-Qayyim, are among Muslim scholars who maintain firm criticism of al- Qanun al-Kulliy on the premise that it denies many faith-related issues stipulated by the texts of personality (qat'iy). The paper adopts a qualitative approach, being mainly a library-based research study. The aim of the paper is, therefore, to maintain al- Qanun al-Kulliy as a means to understand-ing faith in Islam if properly employed.

Islam is religion of simplicity, moderation, just and perfect that leads its followers to the rightful path. Moderation is an important aspect in our daily life. Prophet Muhammad praise be upon him (PBUH) moderate lifestyle is a perfect exemplary. These exemplary has been adapted by previous Islamic scholars in their daily life thus they had emphasized the importance of understanding Al-Quran and Sunnah based on the understanding of previous pious predecessors. Some of the factors that had caused the digression are the diversion, misunderstanding and misinterpretation resulting to improper understanding of the concept on moderation. All these had caused misunderstanding and conflict of interests among us that had caused a disaster to the community. Results of the study found that the pious predecessors had drawn the concepts of moderations in five aspects of life. They are moderation in doing justice and goodness, doing pious deeds, in managing the economic and financial, in following the rightful path and finally moderation in leading our daily life following the exemplary of Prophet Muhammad PBUH.