It is essential to refrain from having intercourse with a menstruating women because doing so leads to an increase in the flow of menstrual blood, because the veins of the uterus are congested and prone to rupture, and get damaged easily; and the wall of the vagina is also susceptible to injury, so the likelihood of inflammation is increased, which leads to inflammation in the uterus and in the man’s penis, because of the irritation that occurs during intercourse. Having intercourse with a menstruating woman may also be off-putting to both the man and his wife, because of the presence and smell of blood, which may make the man impotent