Jurisprudential Investigation of Transformation(Istihalah)

Transformation(Istihalah) is one of the purifiers that there is a consensus among jurists on it.  The reason is metamorphosing the issue of religious law into another. In this paper, we will define the meaning of the transformation and explain that it has not come from the Shari'ah but from the Convention(o'rf). The definition states: "Transformation means the change of an impure thing into something that has real or apparent purity customarily". Then we will examine concepts such as "metamorphosis" and "sublation" to clarify their differences with transformation. We will also take a look at the cases of doubt in the realization of transformation(Istihalah) and discuss in some examples and Fatwas about the differences between the Rule of Purity and the transformation(Istihalah).