Leviticus 15
19 Ref `And when a woman hath an issue -- blood is her issue in her flesh -- seven days she is in her separation, and any one who is coming against her is unclean till the evening.
20 Ref `And anything on which she lieth in her separation is unclean, and anything on which she sitteth is unclean;
21 Ref and any one who is coming against her bed doth wash his garments, and hath bathed with water, and been unclean till the evening.