ויקרא, פרק ט״ו, פסוק כ״ח

The purification process for a woman experiencing abnormal bleeding differs significantly from regular menstruation. The Torah treats this specific condition almost like an illness that requires a careful and strict purification process [ביאור שטיינזלץ, רלב״ג]. The primary goal of this strictness is to safeguard the purity of Israel and prevent anyone from entering the Tabernacle or Temple in an impure state [רלב״ג]. The process begins only when the physical bleeding completely stops [אור החיים, אדרת אליהו]. However, the physical cessation of the flow does not immediately remove the impurity. It merely sets the stage for the required counting period [אור החיים]. This specific counting is exclusive to this condition and cannot run concurrently with other states of impurity, such as those stemming from leprosy or childbirth [תורה תמימה, אדרת אליהו].

Once the flow ceases, a seven-day counting period begins. The Torah entrusts this responsibility entirely to the woman herself, requiring no external witnesses to verify her status. This total reliance establishes a foundational principle in Jewish law that a single individual is fully trusted to testify regarding their own personal adherence to ritual prohibitions [תורה תמימה, רש ר הירש, פרדס יוסף]. These seven days must be absolutely consecutive. If any relevant bleeding occurs during this time, the previous days are voided, and the count must begin anew [תורה תמימה, בכור שור, אדרת אליהו]. However, if bleeding occurs from an unrelated external cause, such as labor pains, the count remains intact [רלב״ג].

Unlike other counting rituals, this process does not involve reciting a blessing. Commentators offer two main reasons for this omission. One approach suggests a practical concern. If the woman were to bleed during the seven days, the count would be retroactively canceled, rendering her initial blessing in vain [רבנו בחיי, חזקוני]. Another perspective views the counting not as an independent Commandment, but merely as a necessary preparation for the ultimate goal of purification. Blessings are not recited over actions that are strictly preparatory [תורה תמימה].

The final step in the process is immersion in a ritual bath containing forty measures of water [פירושי רד צ הופמן, דעת זקנים]. Although a man with a similar condition is strictly required to immerse in natural spring water, the sages note that a leniency is applied here, allowing the woman to use a standard ritual bath like anyone else [רבנו בחיי, ביאור יש״ר, פירושי רד צ הופמן]. Regarding the exact timing of this immersion, commentators disagree. Rabbi Shimon permits immersion at the very beginning of the seventh day, whereas the sages require her to wait until evening. They reason that immersing too early carries the risk of subsequent bleeding later that day, which would retroactively void the entire purification process [תורה תמימה, אדרת אליהו]. Furthermore, while the woman is entirely trusted during the counting phase, an interpretation suggests that another adult woman should be present during the immersion to ensure it is performed correctly [פרדס יוסף].

On a broader spiritual level, this specific Commandment of purification is viewed as a conceptual rectification. The Midrash connects it back to the Garden of Eden, framing the process as a spiritual repair for the sin of the first woman, which ultimately brought mortality and the spilling of human blood into the world [רבנו בחיי].