LEV869 No one has the right to injure his own or anyone else's body, except for therapeutic purposes. Judaism regards the human body as Divine property (Maimonides, Hil. Roze'ah, 1:4) surrendered merely to man's custody and protection. It is an offense, therefore, to make any incisions [this verse and commentaries] or to inflict any injuries on the body, whether one's own or another person's (Hoshen Mishpat, 420:1 ff, 31). One may not as much as strike a person, even with his permission, since the body is not owned by him (Tanya, Shulhan Arukh, Hoshen Mishpat, Hil. Nizkei ha-Guf, 4.) Such injuries, including even amputations (Maimonides, Hil. Mamrim, 2:4) can be sanctioned only for the overriding good of the body as a whole, i.e., the superior value of life and health.