Why are Rulings Contrary Between Hanafi and Shafi’i on Istihalah?
Differences in Juristic Interpretation
The divergence between the Hanafi and Shafi’i schools on istihalah arises from how each defines the concept of complete transformation in Islamic law. Istihalah is the term used to describe the chemical or structural transformation of a substance from its original form to something entirely different.
Hanafi scholars maintain that if a substance undergoes a complete transformation, it is no longer considered an impurity, and its classification is modified accordingly. However, according to the Shafi’i school, even if the content changes, the original decision stands unless there is unmistakable scriptural or consensus-based support.
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Practical Examples of Istihalah
This distinction is evident in matters like the legality of soap made from pig fat or gelatine derived from non-Islamic animals. The Hanafi perspective holds that pig fat loses its original impurity and can be used if it undergoes a chemical transformation to become soap. Similarly, if the transformation is deemed complete, gelatine may be regarded as halal.
Conversely, Shafi’i scholars are wary. In the absence of convincing evidence, they maintain the original impurity or prohibition ruling and argue that transformation must be recognised both legally and physically. As a result, requirements for applications in food and cosmetics are raised.
Ethical and Consumer Considerations
Halal certification organisations, which frequently use different schools of thought when evaluating products, are impacted by this legal dispute. A product may not satisfy Shafi’i requirements even though it has been certified halal by a Hanafi-based organisation. Customers may become confused by this, especially in areas where several madhhabs coexist.
Muslims are encouraged to follow their own convictions or seek advice from reputable academics within their own school of thought. Importantly, this variation does not indicate inconsistency; rather, it demonstrates the diversity of Islamic legal reasoning, as each school applies established principles to new circumstances.
Muslims are better able to make considerate decisions without jeopardising the ummah’s unity when they are aware of these distinctions.
