Enjoining what is right and restraining from what is evil do...
Enjoining what is right and restraining from what is evil do not bring any one closer to his death nor do they diminish the subsistence of anybody. But what is more valuable than all this is a just word before a cruel ruler." Hence, internal reform (enjoining what is right and retraining from what is wrong) is more important than waging a holy war against the external infidels, but what is all the more important is the struggle against the deviations of a leader.
However, it may be noted that enjoining what is right is a stage of Jihad, and similarly a just word before a cruel ruler is also a sort of "enjoining right and forbidding wrong." "Imam Ali expressly says that the view of the Khawarij that the Quran is enough and that there is no need of a government, any administrative machinery and any leader is wrong. The Khawarij used to say that "there is no arbiter and judge except Allah".
Imam Ali said: "Their slogan is right but they draw a wrong conclusion from it. They say that there should be no government except that of Allah. But the people must have a ruler, whether virtuous or wicked, under whose rule both the faithful and the disbeliever may work and enjoy life." (See: Article - 10 on Nahjul Balagha, Murtaza Mutahhary) The administrative machinery is called government because it maintains internal and external peace and enforces law and order.
It is called Imamat because it is headed by a leader who mobilizes the dormant forces and unfolds the hidden capabilities. In Nahjul Balaghah expression of Wali and Ra'iyyat has been used for the ruler and the subjects. The expression implies that the duty of the ruler is to protect and take care of his subjects.
Imam Ali says: "The greatest claim prescribed by Allah is the claim of the ruler on the subjects and the claim of the subjects on the ruler." (Nahjul Balagha, Sermon 216) "The requirements of a human being are not confined to food and shelter. The requirements of man are entirely different from those of a pigeon or a deer. Man has a number of psychological needs also which must be attended to.
Therefore it is not enough for a government which wants to be normal, popular and tolerable, to meet only the material needs of the people. It is equally necessary to pay attention to their human and spiritual needs also. What is important is how the government looks at the people.