Leviticus 15:19

“And if a woman have an issue, etc.] Having finished, as Aben Ezra observes, what was to be said of the male, now the Scripture begins with the female, whose issue, of a different sort, is thus described: [and] her issue in her flesh be blood; or, “blood be her issue in her flesh”; not in any part of her, but in that which by an euphemism is so called, in the same sense as the phrase is used of men, (<031502>Leviticus 15:2); and so it distinguishes it from any flow of blood elsewhere, as a bleeding at the nose, etc. she shall be put apart seven days; not out of the camp, nor out of the house, but might not go into the house of God: whosoever toucheth her shall be unclean until the even; the…”

“UNCLEANNESS OF WOMEN. (Lev 15:19-33) if a woman have an issue--Though this, like the leprosy, might be a natural affection, it was anciently considered contagious and entailed a ceremonial defilement which typified a moral impurity. This ceremonial defilement had to be removed by an appointed method of ceremonial expiation, and the neglect of it subjected any one to the guilt of defiling the tabernacle, and to death as the penalty of profane temerity.”

“And if a woman - Heb. And a woman when she shall have an issue of blood, and her issue shalt be in her flesh, that is, in her secret parts, as flesh is taken, Lev 15:2. So it notes her monthly disease. Put apart - Not out of the camp, but from converse with her husband and others, and from access to the house of God. Seven days - For sometimes it continues so long; and it was decent to allow some time for purification after the ceasing of her issue. Whosoever toucheth her - Of grown persons. For the infant, to whom in that case she might give suck, was exempted from this pollution by the greater law of necessity, and by that antecedent law which required women to give suck to their own…”

“15:19-23 There is nothing wrong or diseased about a woman’s menstrual period. However, because it is accompanied by a bloody discharge, the woman was considered ceremonially unclean (see 15:32-33). The restrictions were similar to the restrictions on the man with the bodily discharge (15:2-12): She was allowed to live at home, but whatever she sat on became unclean. Anyone who touched her had to wash, and presumably she also did so at the end of the seven-day quarantine. However, no animal sacrifice was required.”

“and her issue: Lev 12:2, Lev 12:4, Lev 20:18; Lam 1:8, Lam 1:9, Lam 1:17; Eze 36:17; Mat 15:19; Mar 5:25 put apart: Heb. in her separation Leviticus 15:20”

“The menses of a woman. - "If a woman have an issue, (if) blood is her issue in her flesh, she shall be seven days in her uncleanness." As the discharge does not last as a rule more than four or five days, the period of seven days was fixed on account of the significance of the number seven. In this condition she rendered every one who touched her unclean ( Lev 15:19), everything upon which she lay or sat ( Lev 15:20), every one who touched her bed or whatever she sat upon ( Lev 15:21, Lev 15:22), also any one who touched the blood upon her bed or seat ( Lev 15:23, where הוּא and בּו are to be referred to דּם); and they remained unclean till the evening, when they had to wash their clothes…”