Yichud

In Jewish religious law (halakha), the laws of yichud (Hebrew:איסור ייחוד issur yichud‎, prohibition of seclusion) is the prohibition of seclusion in a private area of a man and a woman who are not married to each other. Such seclusion is prohibited in order to prevent the two from being tempted or having the opportunity to commit adulterous or promiscuous acts. A person who is present in order to prevent yichud is called a shomer.