במדבר, פרק ו׳, פסוק ט׳

A person who undertakes a Nazirite vow dedicates themselves entirely to God, wearing their uncut hair as the proud symbol of this commitment. However, when death unexpectedly strikes in their immediate presence, this continuous state of purity is broken. The resulting impurity requires the individual to shave away the defiled symbol of their vow and begin the process anew. For this law to apply, the exposure to death must be absolutely certain and direct, such as being under the same roof as the deceased [רש״י, חזקוני]. This strict requirement excludes cases of doubtful impurity, like an ancient, undiscovered grave hidden deep underground, which does not retroactively cancel the vow [מלבי״ם, צפנת פענח]. Alternatively, the proximity of the death is viewed as a spiritual consequence. The sudden tragedy may have been drawn to this specific individual because their original vow was motivated by a fear of sin rather than a pure, wholehearted desire to serve Heaven [שפתי כהן].

The abruptness of the tragedy highlights the individual's lack of control. The primary approach among commentators views this extreme suddenness as an event occurring in the blink of an eye, leaving the person with absolutely no time to escape the impurity [רש״י, רלב״ג, אבן עזרא]. Some distinguish between the nature of the event, which happens without any visible warning, and the state of the individual, who is caught entirely off guard [הכתב והקבלה]. Other traditions interpret the suddenness as encompassing different levels of personal responsibility, applying the law whether the impurity was an unavoidable accident or the result of carelessness [רש״י, ברטנורא]. Remarkably, this interruption introduces a unique exception to standard biblical law: the individual must bring an offering of atonement and forfeit their previous days of purity even if they intentionally exposed themselves to the deceased, whereas sacrifices are typically reserved only for unintentional offenses [רבנו בחיי, תורה תמימה, רש״ר הירש].

The contamination shatters a pre-existing state of purity, meaning the law only applies to someone who was pure when their vow began, excluding one who initiated the commitment while already standing in a cemetery [רלב״ג, תורה תמימה]. The impact extends far beyond physical defilement; it profanes the actual holiness that rested upon the person's head, erasing all the previous days of dedication [אור החיים]. Conceptually, this creates a profound spiritual flaw that disrupts their devotion to God and clouds the joy that initially characterized their commitment [העמק דבר]. The responsibility to avoid this disruption lies squarely on the individual rather than on any external force [תורה תמימה].

Once defiled, the individual is obligated to completely shave the hair on their head, leaving not a single strand behind, though this requirement does not extend to other facial or body hair [תורה תמימה]. This shaving takes place on the seventh day of the purification process, coinciding with the sprinkling of the purifying waters. Although the person is not yet fully pure and has not yet brought their offerings, the act of sprinkling initiates the cleansing [רש״י, מזרחי]. The timing is precise; if the sprinkling does not occur on the seventh day, the shaving cannot proceed [רלב״ג, תורה תמימה]. Removing the hair serves to physically discard the flawed vow, clearing the way on the seventh day before the offerings on the eighth day inaugurate a fresh, pure beginning [רש״ר הירש]. Finally, the obligation to shave is expansive enough to allow the process to take place at night, or on subsequent days if the seventh day was missed [תורה תמימה, מלבי״ם].