The need for a coherent design of religious teachings in different aspects of life has led Muslim thinkers to draw religious systems in order to be more successful in encounter to different schools and in providing responsive systems to the needs of the individual and society. In this approach, in order to preserve the originality of the thought and the possibility of referring it to Islam, the contribution and function of religion in the field of systematization should be specified, and extremes should be avoided. In this paper, an attempt has been made to find out the vocation of religion in this field and the expectations from it in this framework, according to the theological foundations; Also, the influence of religious teachings on all kinds of systems and sub-systems, especially in the field of ethics, should be investigated. What this research has accomplished is the more precise determination of the meaning of system and the meaning of systemization. In this work, the approach of unnecessary scrutiny of words and terms has been avoided and the necessary formats have been determined by focusing on the need for systemization. Also, relying on the belief in the comprehensiveness of Islam, it has been tried to find out the extent of using the teachings of the Quran and Hadith to build any form of systems.