Leviticus 15:19
“And if a woman have an issue, and her issue in her flesh be blood, she shall be put apart seven days: and whosoever toucheth her shall be unclean until the even.”
And every garment, and every skin, whereon is the seed of copulation, shall be washed with water, and be unclean until the even.
The woman also with whom man shall lie with seed of copulation, they shall both bathe themselves in water, and be unclean until the even.
And if a woman have an issue, and her issue in her flesh be blood, she shall be put apart seven days: and whosoever toucheth her shall be unclean until the even.
And every thing that she lieth upon in her separation shall be unclean: every thing also that she sitteth upon shall be unclean.
And whosoever toucheth her bed shall wash his clothes, and bathe himself in water, and be unclean until the even.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“And a certain woman, which had an issue of blood twelve years,”
“And she said to her father, Let it not displease my lord that I cannot rise up before thee; for the custom of women is upon me. And he searched, but found not the images.”
“Speak unto the children of Israel, saying, If a woman have conceived seed, and born a man child: then she shall be unclean seven days; according to the days of the separation for her infirmity shall she be unclean.”
“And if a man shall lie with a woman having her sickness, and shall uncover her nakedness; he hath discovered her fountain, and she hath uncovered the fountain of her blood: and both of them shall be cut off from among their people.”
“Zion spreadeth forth her hands, and there is none to comfort her: the Lord hath commanded concerning Jacob, that his adversaries should be round about him: Jerusalem is as a menstruous woman among them.”