What did God or the Prophet Muhammad say about temporary marriage? Is it allowed or forbidden in Islam?

Fatwa, posted 4.22.2010, from South Africa
Religious Authority: 
Ebrahim Desai
Fatwa Question or Essay Title: 
What did God or the Prophet Muhammad say about temporary marriage? Is it allowed or forbidden in Islam?

The Ulama unanimously agree that Mut'ah (temporary marriage) was permissible in the early days of Islam due to extenuating circumstances. Subsequently, The prophet issued a decree of prohibition. Therefore, temporary marriage is now forbidden. [Note: Generally, Sunni Muslims do not recognize temporary marriage while Shia Muslims do. For other opinions search: marriage types.]