Leviticus 15:18

The woman
<0802>

also with whom man
<0376>

shall lie
<07901> (8799)

[with] seed
<02233>

of copulation
<07902>_,

they shall [both] bathe
<07364> (8804)

[themselves] in water
<04325>_,

and be unclean
<02930> (8804)

until the even
<06153>_.

Leviticus 18:18

Neither shalt thou take
<03947> (8799)

a wife
<0802>

to her sister
<0269>_,

to vex
<06887> (8800)

[her], to uncover
<01540> (8763)

her nakedness
<06172>_,

beside the other in her life
<02416>

[time]. {a wife...: or, one wife to another}