Are there any circumstances in which the bone of a pig can be regarded as halal?
If the formulation of the parts of such a bone were to change chemically, they would
transform into other substances. For example, if the chemical formulation of the elements Oxygen and Hydrogen, which as H2O constitute water, do not remain bonded as H2O, they no longer constitute water but are transformed back into the gasses Hydrogen and Oxygen. Such changes in chemical formulation are referred to in Islamic jurisprudence – fiqh – as transformation – istihalah – and all jurists consider transformation ‘a purifying agent’.