Berean Standard Bible
Leviticus 20:18
“If a man lies with a menstruating woman and has sexual relations with her, he has exposed the source of her flow, and she has uncovered the source of her blood. Both of them must be cut off from among their people.”

In context
18If a man lies with a menstruating woman and has sexual relations with her, he has exposed the source of her flow, and she has uncovered the source of her blood. Both of them must be cut off from among their people.
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Berean Standard Bible · A modern, readable English translation. Public domain (CC0).