Hadith of prohibition of Mut'ah at Khaybar

Nikāḥ al-mutʿah (Arabic: زواج المتعة‎‎, literally "pleasure marriage" ), is a type of temporary contract marriage permitted in Twelver Shia Islam, where the duration of the marriage and the mahr must be specified and agreed upon in advance. It is a private contract made in a verbal or written format. A declaration of the intent to marry and an acceptance of the terms are required (as they are in nikah). This type of marriage is also known as sigeh or sigheh in Iran.

According to Twelver Shia jurisprudence, preconditions for Nikah mut'ah are: The bride must not be married, she must be Muslim or belong to Ahl al-Kitab (People of the Book), she should be chaste, not addicted to fornication and she should not be a young virgin (especially if her father is absent and cannot give consent). At the end of the contract, the marriage ends and the wife must undergo iddah, a period of abstinence from marriage (and thus, sexual intercourse). The iddah is intended to give paternal certainty to any child/ren should the wife become pregnant during the temporary marriage contract.

Generally, the Nikah mut'ah has no proscribed minimum or maximum duration. However, one source, The Oxford Dictionary of Islam, indicates the minimum duration of the marriage is debatable and durations of at least three days, three months or one year have been suggested.Sunni Muslims, and within Shia Islam, Zaidi Shias, Ismaili Shias, and Dawoodi Bohras do not practice Nikah mut'ah. However, Sunni Muslims practice Nikah misyar, which has been regularly considered a somewhat similar marriage arrangement.

...
Wikipedia