Leviticus 15:18 in the King James Version
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.
Context
17 Every garment and every skin which the semen is on shall be washed with water, and be unclean until the evening.
18 If a man lies with a woman and there is an emission of semen, they shall both bathe themselves in water, and be unclean until the evening.
19 “‘If a woman has a discharge, and her discharge in her flesh is blood, she shall be in her impurity seven days. Whoever touches her shall be unclean until the evening.