ISIS slashes their fighters' pay by half
The document does not state the reason for the cut but it is believed to be as a result of massive losses suffered by the group. Only this month, an airstrike hit a warehouse housing millions of dollars of the group's funding.
After quoting at length from the Koran the pronouncement says: 'So on account of the exceptional circumstances the Islamic State is facing, it has been decided to reduce the salaries that are paid to all mujahideen by half, and it is not allowed for anyone to be exempted from this decision, whatever his position.'
Despite the cut, the document states that the distribution of Zakat, a religious obligatory tax collected for poor Muslims, will not be hampered.
In December an international coalition launched a huge number of airstrikes against the terror organisation, targeting their oil fields.
Iraqi forces recently pushed ISIS fighters out of central Ramadi, the capital of Anbar province, months after the armed group captured the key city about 60 miles west of Baghdad.
Last month it was revealed that ISIS is though to make around £52million a month through taxes, oil sales and selling illegal drugs.