司法制度的基础建立在三项原则之上：

The basis of the Judiciary is set in three principles :

1) 对每一个问题适用伊斯兰教法的裁决都是必须的。

1) That the application of the Islamic judgement on each and every issue is obligatory,.

2) 遵循伊斯兰教以外的任何教法是被禁止的；以及

2) That it is forbidden to follow any Shari‘ah other than Islam, and.

3)任何不同于伊斯兰教的教法都是“库夫尔”（不信）和“塔古特”（虚妄）。

3)Any Shari'ah other than Islam is kufr (disbelief) and taghut (falsehood).

正是在这些原则的框架之内，伊斯兰国的司法体系得以运作；也正是以此为基础，从伊斯兰教法中确立了司法（“al-Qadha”）的定义。

It is within the framework of these that the Judicial System of the Islamic State operates, and it is based around these that the definition of the judiciary (‘al-Qadha’) is established from the Shari‘ah.

因此，司法的定义与目的是："使合法的法官能够就任何情况下的神圣律例提出裁断，并具有执行这些裁断的权威。"

Thus, the definition and purpose of the judiciary is, “to allow the legitimate judges to provide the opinions about the divine rules on any situation, with the authority to enforce them.”.