What Islamic State brides want
The person who posted contract is chief international correspondent for al-Rai Media, Elijah Magnier, who also actively tweets about IS.
In a response to the above tweet, Magnier confirms that "those living under #ISIS, willing to carry suicide attacks, write down their names and wait for the approval".
In Islam, both men and women are allowed to write down conditions in what is referred to as "marriage contract". The contract is then signed at a "Katb ktab", ceremony which is attended by family and marriage officials.
For IS brides, those conditions apparently extend to killing themselves and others in a violent act.
Charles Winter, a researcher at the counter-extremism think tank Quilliam, told the Independent: "The certificate does say that the wife's terms are that of if the 'caliph' consents then she is allowed to go on a 'martyrdom' operation and her husband can't forbid her from doing so.
"It's an obscure expression of feminist jihadism in some sense but what it isn't is evidence that IS is ordering brigades of women to carry out bomb attacks."