Is cauterization (*ḥasm*) required after amputation?
Chapter on Amputation in Theft
Al-Mughni
Book of Ḥudūd (Prescribed Penalties)
Primary text
After amputation, cauterization is required, which involves heating oil until it boils and dipping the severed limb into it to seal the blood vessels, preventing fatal hemorrhage. This practice is supported by a report, though noted as debatable by Ibn al-Mundhir, where the Prophet (peace be upon him) ordered the cutting and cauterization of a thief. Al-Shafi'i and Abu Thawr, among others, recommended it.
Supporting text
If cauterization is not performed, the Qadi stated that the cutter bears no liability, as the prescribed punishment is the amputation itself, not the subsequent medical treatment of the convicted person. It is recommended for the amputee to cauterize the wound himself; if he refrains, he incurs no sin, as it is considered leaving treatment for an ailment. This is the Madhhab of Al-Shafi'i.