What is the ruling on a person cauterizing himself, or cauterizing another, or both, when there is no need for cauterization?

Cauterization is permissible out of necessity, whether a person performs it on themselves or on others. However, abstaining from it is better if it is not specifically necessary. The Prophet, peace and blessings be upon him, sought medical treatment and cauterized others, but he did not cauterize himself, and he forbade his community from cauterization, saying: "I do not like to be cauterized."