A question was raised to Dar al-Ifta regarding the ruling on recycling waste containing impurities to reuse it.

Dar al-Ifta clarified that recycling such waste involves converting it into new elements and components that differ from its original state. According to Islamic jurisprudence, impurities do not remain after this transformation, based on the principle of Istihalah, meaning that an object changing from its original nature into another substance removes its impurity.

Examples cited by jurists include:

• Carrion and pork becoming salt,

• Animal waste and husks turning into ash after burning,

• Wine turning into vinegar, all of which are considered pure after transformation.

Different schools of Islamic jurisprudence detail this principle:

• Hanafi: Impurities are purified through transformation, like carrion in salt or burnt husks.

• Maliki: Impurity is lifted when its defining characteristics disappear, e.g., blood or waste turning into other materials.

• Hanbali: All impurities are purified by transformation, such as tanned hides or resulting ash.

• Zahiri: Any substance changing from its original impure description to a new material is pure and usable.

Hence, recycling waste containing impurities into beneficial products is permissible in Islam, with due verification from specialists to ensure safety and absence of harm.