ISIS 'bill of sale' document details how women in Mosul were sold for $1,500

A document found in the newly liberated Iraqi city of Mosul appears to show how women in the city were traded as sex slaves by members of the Islamic State terror group.

The "bill of sale," which appears to be signed with fingerprints of the buyer and seller, details how one woman, described as "20-years-old, physically fit with brown eyes," was sold for $1,500.

The hand-written note reveals that the woman was sold by someone named Abu Zubair to an individual named Abu Monem.

According to Daily Mail, the authenticity of the document, which is now circulating on social media, has not been independently verified, and the identity of the woman involved is not known.

Most of the sex slaves captured by the terror group are members of the Yazidi community. Yazidis, who are neither Arab nor Muslim, are regarded by ISIS as devil-worshippers and citizens without rights due to their alleged anti-Islamic beliefs.

It is believed that ISIS has kidnapped as many as 6,470 Yazidis when the militants captured Sinjar in August 2014. Most of the men were killed and dumped in mass graves, while the women and children were sold into slavery.

Younger children were reportedly sold for about $500 to couples who could not have children to be brought up as Muslims. Older boys were forced to train as fighters or sold as house slaves if they were found to be unfit for combat.

Last year, an ISIS posting in Arabic detailed the sale of a young girl, saying: "Virgin. Beautiful. 12 years old.... Her price has reached $12,500 and she will be sold soon."

The advertisement was reportedly posted on an encrypted Telegram application and was shared with The Associated Press by an activist with Iraq's persecuted Yazidi community.

Another document recently discovered in Mosul appears to show how much ISIS fighters earn for committing terrorist acts. Single militants receive as low as £55 (US$71) for each task, the Daily Star reported, citing Sputnik News.

One jihadi, identified as Abu Jana, was paid £140 (US$182), while another militant called Abu Nasser, received £195 (US$253) for leading an attack on coalition forces. Leaders of the terror group reportedly take home monthly payments of over (US$494).

The document also indicated that militants who are injured in attacks launched by coalition forces receive generous reimbursements.

However, the wages have dropped dramatically as the terror group continues to lose ground. When ISIS gained control of the region in 2014, foreign fighters reportedly earned as much as £1,000 (US$ 1,301) a month.