Nikah mut'ah
In some forms of the religion Islam, Nikah mut'ah is a form of marriage. It is also called Sigheh. Unlike Nikāḥ, which is the other form of marriage in Islamic law, a Nikah mut'ah marriage does not last for the two people's whole lives.  It lasts only limited time. Nikah mutah is about sexual pleasure. The Twelver Shia Muslims say that Nikah mut'ah is legal, but most other Muslims disagree.