By Owen Holdaway
A Yazidi sex slave has told how she was kidnapped, raped and beaten with a plastic pipe by a brutal ISIS soldier as his British teenage jihadi bride witnessed her suffering and did nothing to end it.
Ferida, whose name has been changed to protect her identity, revealed her sickening abuse at the hands of the jihadi fighter during a four-month ordeal held in Deir ez-Zor, eastern Syria.
In an exclusive interview with MailOnline, a tearful Ferida explained how her terrifying ordeal began when Islamic State raided her home town of Sinjar in Iraq in August last year. She was held and transferred at various prisons for a few months before being handed over to an ISIS fighter.
'They gave every woman to an ISIS fighter. I was given to someone called Abu Muslim, a Saudi national and I was forced to marry him,' she said.
'He had another wife who was British. She didn't tell me her name. All I know is that ISIS brought this woman from Europe to have sex with her. She looked like she was in her 20s, had dark skin and strange hair.'
Ferida remembered the girl had a British accent and that her Arabic was 'very bad', so she spoke English to her husband.
He was from Saudi Arabia and studied medicine in America for four years where he trained in midwifery.
She did not know exactly how high up he was in the Islamic State organisation but claimed that he was a 'Sharia judge', who sneaked into Syria from Turkey by pretending to be a photographer.
The militant - who left his first wife, their two sons and daughter behind in Saudi Arabia to join ISIS - tried to force Ferida to convert to Islam when he was not abusing her.
From the relative safety of the Rwanga refugee camp in Iraq, she revealed: 'The Saudi man was very violent. It depended on his temper. When he was angry he would hit me. When I was not good at my job he hit me. He hit me with a plastic pipe.
'Whatever they ordered, I had to do for both of them. Life was so terrible. I cried every time.'
She added that she considered suicide but couldn't do it because she was being kept with her brother's daughter. His two other children, including her nephew, aged three, were being held by an ISIS fighter living nearby.
When asked what his British bride did about the abuse, Ferida said: 'She definitely knew about the beatings and did not do anything. She supported her husband.'
'All Yazidis are kafir [the Islamic term for unbelievers],' she once told Ferida, adding: 'Anyone who does not follow ISIS is kafir.'
She added: 'She freely joined ISIS and then married him. They had a normal life. But I was their servant, I was their slave.'
The softly-spoken refugee said Abu-Muslim and his wife had 'a good' relationship and treated one another with 'respect'.
His young bride would speak in English to her family on the internet, Ferida said.
The identity of her British co-captor has not been confirmed but it could be any one of at least 60 British women and girls who are believed to have travelled to Syria to become jihadi brides.
When shown pictures of British girls who have joined the Islamic State and been identified so far, Ferida said she was '100 per cent' certain the woman was 17-year-old Salma Halane who left Manchester to join ISIS with her twin sister, Zahra in June last year.
Ferida said she was also sure it was not her sister, whom she also recognised.
But sources connected to Salma's family said they had some knowledge of the girls' movements and that they had never heard of them being in Deir ez-Zor.
A counter terrorism source added that there was no evidence that the twins had been in the city, south east of the terror group's de facto capital of Raqqa.
The twins had also tweeted late last year that their ISIS fighter husbands had been killed in battle.
Ferida was snatched from her home in the northern Iraqi district of Sinjar, where Islamic State fighters slaughtered more than 5,000 Yazidi people and captured up to 500 women and children as they swept across the region.
The Yazidis, whose religion has elements of Christianity and Islam, pray to a being known as Melek Taus - which translates to 'Peacock Angel'.
For this reason, ISIS fanatics see them as 'devil worshippers' and under the group's twisted version of Islamic law, give Yazidis the choice to convert to Islam or be killed, according to the Brookings think-tank.
After being abducted in Sinjar, Ferida was transported to the ISIS-held city of Tal Afar before being taken to its other Iraqi stronghold of Mosul.
There she spent 12 nights in the notorious Badush prison, a holding zone for Islamic State's human cargo, with around 4,000 others. They were given 'no food and water' before being taken back to Tal Afar.
Ferida recounted how the extremists took them to a school where the women were separated from the girls and how girls as young as nine were 'used for sex'.
They were all transported to Qasr Mihrab, a deserted Shi'ite village in Iraq where they spent two months under armed guard, before they and '300 others' were taken to a 'field' just outside ISIS's adopted capital of Raqqa, in Syria.
Six weeks later, they were moved to Deir ez-Zor, where the commander in the region, a man called Abu Hafiz, parcelled out the Yazidi women to different ISIS fighters.
In January Ferida was handed over to Abu Muslim and his British bride. She was forced to marry him, a way that ISIS attempts to legitimise what is nothing more than rape and sexual slavery.
She said: 'I met her on January 1, but I do not know when she entered Syria... I think she stayed in Turkey for nine or ten days and then she decided to go to Syria through "smuggling" and then spent one month in Syria working at an orphanage.'
Ferida said she asked her name 'many times', but the woman replied she could not divulge it 'because of her family back in Britain'.
Being married to an ISIS fighter is vital for women living under ISIS rule, according to a blog supposedly written by Aqsa Mahmood, from Glasgow, who left her home in November and fled to Syria where she married an ISIS fighter.
She claims women are not allowed to leave home without their husband's permission.
Ferida recalls the British bride saying that she was a virgin - which is highly prized among jihadi fighters.
After four months of constant suffering, Ferida and her brother's children were sold to a Syrian man, 22, who Ferida described as a 'good man', who did not abuse her.
They stayed with him for around a month before he agreed to contact her brother, who paid him a $22,000 ransom and she was finally reunited with him.
The family's ordeal is not yet over as her brother's wife is still being held by ISIS and he is unsure if he will be able to get her freed.
He said: 'I am trying to raise money to buy back my wife. But, I just don't have enough to do it.'
Amnesty International has said hundreds - possibly thousands - have been forced to marry, been 'sold' or given as 'gifts' to ISIS fighters or their supporters - and many held as sexual slaves are girls younger than 14.
Those considered the 'most beautiful' are then sent to horrendous auction houses where they are stripped naked and sold to the highest bidder.
In May, ISIS released a chilling document in which it justified the kidnapping and rape of Yazidi girls it enslaved.
The shocking admissions were made by a jihadi bride in the ninth edition of Islamic State's propaganda magazine Dabiq in a feature entitled: 'Slave girls or prostitutes.' She describes the cruel sex crimes as Sunnah which roughly translates as 'a way of life'.
The hate-filled rant was penned by a suspected jihadi bride named Umm Sumayyah Al-Muhajirah, who has called for her 'sisters' to emigrate to Syria and become wives to Islamic State extremists.
She openly admitted that ISIS plundered villages and kidnapped women, saying: 'As for the slave-girl that was taken by the swords of men following the cheerful warrior then her enslavement is in opposition to human rights and copulation with her is rape?!'
Sumayyah Al-Muhajirah also expressed deep disappointment to Islamic State fanatics who refuted the mass kidnappings of Yazidi girls, saying: 'So the supporters started denying the matter as if the soldiers of the Khilafah [Caliphate] had committed a mistake or evil.'
The maniacal jihadi bride claims in Dabiq that slave girls were 'turned into hard-working, diligent seekers of knowledge after she found in Islam what she couldn't in Kuffar [non-believer], despite the slogans of "freedom" and "equality".'
Previously, a 14-year-old Yazidi girl has told how she was forced to undergo medical exams to 'prove' her virginity before she was sold to ISIS militants in a twisted auction.
Bahar, whose name was also changed, was sold to four different men over a period of six months. Her second vile captor promised not to touch her sexually until she had her period but he went back on his word and began raping her daily.
In May, a 17-year-old Yazidi revealed how she and her little sister were raped daily by depraved jihadis after they were sold into slavery at an auction of virgins - and she is now pregnant with the a jihadi's child.
A 19-year-old named Jilan killed herself while being held captive in Mosul because she feared she would be raped, according to the Amnesty report.
Her friend, who managed to escape, told Amnesty: 'One day we were given clothes that looked like dance costumes and were told to bathe and wear those clothes... Jilan killed herself in the bathroom. She cut her wrists and hanged herself.
'She was very beautiful; I think she knew she was going to be taken away by a man and that is why she killed herself.'
The trauma of Yazidi girls who do survive the sexual violence and vicious beatings is further worsened by the stigma surrounding rape.
Survivors feel that their 'honour' has been tarnished and fear that their standing in society will be diminished as a result.