Nikah mut'ah is a type of temporary marriage in some Muslim communities where a man and a woman make an agreement to get married for a specific period, like a month or a year. Think of it like a rental agreement for marriage. The couple agrees to have a relationship like a married couple, but after the specified time, they will legally divorce and go their separate ways.
This type of marriage is different from a traditional marriage because it has a specific time limit and doesn't necessarily involve a ceremony or the usual customs of a typical marriage. It's more like a casual agreement between two people who want to have a temporary relationship.
Some people believe that nikah mut'ah is allowed in certain situations, such as when a person is traveling or when they're not ready for a permanent marriage. However, this type of temporary marriage is controversial and many Muslim scholars question whether it's really permitted in Islam.
Overall, nikah mut'ah allows some Muslims to have temporary relationships without committing to a permanent marriage, but it's a debated topic among Muslims and not widely practiced in many Muslim communities.