The Bradford Crown Court heard that the victim’s life was so miserable that she considered committing suicide after her husband had abandoned her at his parents’ home.
The immoral 56-year-old made her swear on the Koran that she would keep the abuse a secret and warned that he would heap shame on her by forcing her to divorce his son if she refused to have sex with him.
According to the Daily Mail, he deprived his daughter-in-law of her jewellery and passport after she came to Britain following an arranged marriage.
The defendant also physically abused her, scratching her arm with a screwdriver and burning her with an iron to reinforce his authority over her, the court heard.
The victim suffered constant sexual abuse from her father-in-law for three months before acquiring a basic understanding of English to call the police one night and ask for help.
Prosecutor Richard Clews said the defendant told his daughter-in-law not to wear underwear to make the sexual abuse easier, and molested her when his wife was out of house.
Judge Jonathan Durham Hall told the Pakistani man: “She was your prisoner and slave in your home. The slavery turned into repeated, sustained sexual abuse and degradation.”
The judge praised the woman’s bravery and commended Detective Constable Sharon Larkin, of West Yorkshire Police, for her work on the case.
The man pleaded guilty to sexual assault, between May 1 and August 12, 2010, causing his victim to engage in sexual activity against her will, causing her actual bodily harm.