From the past to the present day, there has been so many works on al-wujah wa'l-nagdr. However, there is no unanimous opinion as to the meaning of the term nazair. It is worthy to note that, scholars before Ibn Jawzi (d. 597/1201), who wrote about the science of al-wujah wa'l-nagar did not define these terms. This situation is seen as the principal cause of difference in opinion. Additionally, while criticizing the definition of Ibn Jawzi, scholars like Ibn Taymiyya (d. 728/1328) and al-Zarkashi (d. 794/1392) came up with their own definitions of nazair. It is therefore possible to say that this situation led to the existence of different understanding of the concept. Consequently, in contemporary days, four different perspectives on nazair could be found in books, thesis, publications and encyclopedia articles relating to this topic.