They spread truth and justice throughout the globe. Those earlier Muslims became the Imams of guidance, leaders of truth, and callers of reform. Then, there came after them people who were Imams of guidance and callers of truth when they adopted the same righteous way of their precedents spreading the Religion of Allah, calling people to Allah, and striving with their souls and possessions in the Cause of Allah. They never feared the blame of the blamers while proclaiming the Truth. Therefore, Allah supported them, granted them victory over their enemies, and fulfilled to them the Promise that He gave to believers in His Saying,
O you who believe! If you help (in the cause of) Allâh, He will help you, and make your foothold firm.
Verily, Allâh will help those who help His (Cause). Truly, Allâh is AllStrong, AllMighty. Those (Muslim rulers) who, if We give them power in the land, (they) enjoin IqamatasSalât [i.e. to perform the five compulsory congregational Salât (prayers) (the males in mosques)], to pay the Zakât and they enjoin AlMa'rûf (i.e. Islâmic Monotheism and all that Islâm orders one to do), and forbid AlMunkar (i.e. disbelief, polytheism and all that Islâm has forbidden) [i.e. they make the Qur'ân as the law of their country in all the spheres of life]. And with Allâh rests the end of (all) matters (of creatures).
After that, people drifted away from the way of these successful generations. They differed and neglected Jihad, preferred the easy life, followed their desires, and committed wrongdoings except those whom Allah protected. In consequence, Allah changed their prosperous condition and gave their enemies power over them due to the sins they committed. Indeed, Allah is never unjust to His servants. He (Exalted be He) says,
Verily, Allâh will not change the (good) condition of a people as long as they do not change their state (of goodness) themselves (by committing sins and by being ungrateful and disobedient to Allâh). But when Allâh wills a people's punishment, there can be no turning back of it, and they will find besides Him no protector.
In light of this, Muslims, being governments or common public, should return to Allah and be sincere in their worship. Everyone is required to offer Tawbah (repentance) to Allah of their faults and sins and to abide by the duties and obligations that Allah has ordained. The true Muslim is the one who keeps away from every forbidden act and advises other Muslims to obey Allah (may He be exalted) and cooperates with them in fulfilling their duties towards Allah.
The most important matter in this regard is to execute the Shar'y (Islamic) Hudud (ordained punishments for violating Allah's Law), resort to the judgment of Shari'ah (Islamic law) in everything, refuse the manmade laws that go against the Laws of Allah and oblige all people to adhere to the judgment of Shari'ah.