F11Chapter of Removing Impurity
Purifying impurity with something other than water (detergents, alcohol)
Is impurity purified by liquids and detergents if they remove its substance and trace?
Hanafi
Impurity is purified by any pure liquid that removes it, such as vinegar and rosewater; so cleaning with detergents that remove the substance and trace is valid.
Reference: Radd al-Muḥtār
Maliki
An impurity is not purified except with unmixed water; no other liquid takes its place, such as detergents or spirit, even if they remove the substance and the trace.
Reference: Al-Sharḥ al-Kabīr — Ḥāshiyat al-Dasūqī
Shāfiʿī
The impure is purified only by unmixed water; detergents and alcohol do not suffice to lift the ruling of impurity even if they remove the substance.
Reference: Tuḥfat al-Muḥtāj
Hanbali
Removing an impurity is only done with purifying water; it is not purified by liquids such as spirit, even if the substance is gone.
Reference: Kashshāf al-Qināʿ — Sharḥ Muntahā al-Irādāt