Since one feature among the two main distinctions of this new era was the establishment of a purely Islāmic government, at this instance, it would be appropriate to mention the fundamental teaching, which the Founder of Islām presented with respect to the system of government. First and foremost, in this regard, it should be understood that as per the practice of Islām in other worldly issues, Islām has only presented one primary teaching and has left the details to be settled by the circumstances of every era, country and nation. In actuality, as far as issues of this nature are concerned, it is this very method which is most sensible and appropriate. In other words, fundamental guidance should be given but matters of detail should be left open. For if this practice is not employed and a single rigid, unchangeable, and detailed law is applied in every era and nation without taking a variance of circumstances into account, it is obvious that religious law shall become a curse instead of a source of mercy; and instead of disseminating guidance shall become a means of misguidance. Hence, with immense wisdom, Islām has only given fundamental guidance in this respect, which may be equally applied in reasonably differing circumstances of all types.