In The Bazaar of Sexes by Sudabeh Mortezai
Adocumentary about temporary marriage

"Religiously sanctified prostitution or a loophole for couples to have a relationship within the rigid Islamic laws? Stories revolve around the institution of temporary marriage, also called lust-marriage, a Shia practice that allows a man and a woman to legally marry for a fixed period of time ranging from one hour to 99 years."