Translation of the verse 41 from Surah Al-hajj : Number of verses 78 - - page 337 - Part 17.
Those (Muslim rulers) who, if We give them power in the land, (they) order for Iqamat-as-Salat. [i.e. to perform the five compulsory congregational Salat (prayers) (the males in mosques)], to pay the Zakat and they enjoin Al-Ma'ruf (i.e. Islamic Monotheism and all that Islam orders one to do), and forbid Al-Munkar (i.e. disbelief, polytheism and all that Islam has forbidden) [i.e. they make the Quran as the law of their country in all the spheres of life]. And with Allah rests the end of (all) matters (of creatures).
[And they are] those who, if We give them authority in the land, establish prayer and give zakah and enjoin what is right and forbid what is wrong. And to Allah belongs the outcome of [all] matters.
(22:41) Allah will surely help those people who help Him: *84 Allah is indeed All-Powerful, All-Mighty. These are the people who, if We give them power in the land, will establish .Salat, pay the Zakat dues, enjoin what is right and forbid what is evil, *85 and the final decision of all affairs is in the hand of Allah. *86
*84) Those "who help Allah" are the people who invite mankind to Tauhid and exert their utmost to establish the "True Faith" and righteousness. For further explanation see E.N. 50 of Chapter III (AI-i-`Imran).
*85) ".......if We give them power ...... evil": In this one sentence, the real aim of the Islamic State and the characteristics of those who conduct its affairs have been stated concisely but comprehensively. Those who help Allah and deserve His succour behave righteously, establish Salat, make arrangements for the collection of Zakat and use their power and authority to propagate good and eradicate evil.
*86) That is, "It is Allah Who decides whom to give power in the land and when" . This is meant to remove the misunderstanding of the proud and arrogant people who think that the destiny of the land and its dwellers is in their hands, and there is none to depose them from power. But Allah dethrones the most haughty ruler in supernatural ways and gives power to the most humble in order to show that He is All-Powerful, All-Mighty.