Levítico 20:18

18 Se um homem se deitar com mulher no tempo da enfermidade dela e lhe descobrir a nudez, descobrindo a sua fonte, e ela descobrir a fonte do seu sangue, ambos serão eliminados do meio do seu povo.

18 And if a man has sex relations with a woman at the time when she is unwell, he has seen her fountain and she has let the fountain of her blood be uncovered, and the two of them are to be cut off from among their people.