Levítico 18

And you may not go near a woman or have sex relations with her when she is unclean, at her regular time.

Y no llegarás á la mujer en el apartamiento de su inmundicia, para descubrir su desnudez.

Also thou shalt not approach unto a woman to uncover her nakedness, as long as she is put apart for her uncleanness.

“‘You shall not approach a woman to uncover her nakedness, as long as she is impure by her uncleanness.