In the history of the Islamic State, it was famous for its administration of justice, and its ability to protect the rights of the people, and this was the case in all the different fields of life, from personal to political.

There are two people who are responsible for the implementation of Islam in such a manner - the Khaleefah and the qadi (judge). The Khaleefah executes the Islamic rules and implements them over the people, while the judge derives the Islamic verdicts for the different situations from their sources (i.e. the Qur’an, the Sunnah, and whatever derives from them) and presents them for application.

Accordingly, the judiciary is one of the fundamental pillars of the Islamic State and it is upon this that the ruling system depends for the implementation of Islam in the political life. There has always been in the Islamic State a judiciary which administers justice, and judges who would judge between the people to ensure that Islam was constantly adhered to.

This system of judiciary is nothing alien to Islam; indeed it derives from the Islamic ‘aqeedah and forms an integrated part of the Islamic way of life, complementing the other Islamic systems, like the Economic (Iqtisad) and Ritual (Ibadat) systems, making a perfectly functioning whole.