שמות, פרק כ״א, פסוק י״ח

When human conflict escalates from words to physical violence, it establishes the core principles of liability for personal injury. A physical blow rarely happens in a vacuum; it is usually the result of a preceding verbal dispute [מלבי״ם, קאסוטו]. However, even if the victim provoked the argument, and even if the attacker struck out in the heat of passion without planning to cause harm, the attacker remains fully responsible to pay for the resulting damage [העמק דבר, רש״ר הירש]. Furthermore, these laws of liability apply equally to both men and women [חזקוני, מלבי״ם].

When examining the objects used in an assault, commentators explore the exact nature of the weapons involved. The primary approach among commentators is that a fist refers to a clenched hand [רמב״ן, אבן עזרא, רבנו בחיי, רש״ר הירש]. Alternatively, some suggest it refers to a hard clod of earth, a brick, or a stone ready to be thrown [רשב״ם, חזקוני, אבן עזרא]. The contrast between a severe weapon like a stone and a lighter, typically non-lethal weapon like a fist establishes the legal principle of assessment. A court must carefully evaluate whether the specific object used, along with the force and location of the blow, actually had the potential to cause the resulting injury or death [רמב״ן, רבנו בחיי, מלבי״ם, צפנת פענח]. Because this evaluation is critical, the object used in the attack must be identified and presented before witnesses. If a stone is lost immediately after the incident and its potential for harm cannot be assessed, the attacker might be exempt from certain financial liabilities [תורה תמימה בשם חז״ל].

The requirement that the victim must survive establishes a clear legal boundary. Financial compensation is only mandated if the injured party remains alive. If the blow proves fatal, the incident becomes a murder case. In such an event, the attacker is exempt from monetary payments because he now faces a capital charge [אור החיים]. Furthermore, if the court initially determines that the victim will not survive the injury, the victim immediately loses the legal right to claim damages and medical expenses, as he is considered deceased in this legal context. Only if an unexpected recovery occurs and he survives does the obligation for financial compensation arise [העמק דבר, אור החיים].

As a result of the injury, the victim may be reduced to a state of illness and weakness that prevents him from working and maintaining his daily routine, rather than simply being confined to a physical bed [רש״י, גור אריה, ביאור יש״ר]. While compensation for the loss of limbs and payments for pain and humiliation are derived from other legal principles, this specific scenario introduces two distinct categories of mandatory compensation. An attacker is obligated to pay for the victim's lost wages due to missed work, as well as all medical expenses required for a full recovery [רש״י, מזרחי, מלבי״ם].