9th century Qur'an.According to William Montgomery Watt, for Muhammad, religion was not a private and individual matter but rather “the total response of his personality to the total situation in which he found himself. He was responding [not only]… to the religious and intellectual aspects of the situation but also to the economic, social, and political pressures to which contemporary Mecca was subject." Bernard Lewis says that there are two important political traditions in Islam – one that views Muhammad as a statesman in Medina, and another that views him as a rebel in Mecca. He sees Islam itself as a type of revolution that greatly changed the societies into which the new religion was brought.
Historians generally agree that Islamic social reforms in areas such as social security, family structure, slavery and the rights of women and children improved on the status quo of Arab society. For example, according to Lewis, Islam "from the first denounced aristocratic privilege, rejected hierarchy, and adopted a formula of the career open to the talents". Muhammad's message transformed the society and moral order of life in the Arabian Peninsula through reorientation of society as regards to identity, world view, and the hierarchy of values. Economic reforms addressed the plight of the poor, which was becoming an issue in pre-Islamic Mecca. The Qur'an requires payment of an alms tax (zakat) for the benefit of the poor, and as Muhammad's position grew in power he demanded that those tribes who wanted to ally with him implement the zakat in particular.
The Sunnah represents the actions and sayings of Muhammad (preserved in reports known as Hadith), and covers a broad array of activities and beliefs ranging from religious rituals, personal hygiene, burial of the dead to the mystical questions involving the love between humans and God. The Sunnah is considered a model of emulation for pious Muslims and has to a great degree influenced the Muslim culture. The greeting that Muhammad taught Muslims to offer each other, “may peace be upon you” (Arabic: as-salamu `alaykum) is used by Muslims throughout the world. Many details of major Islamic rituals such as daily prayers, the fasting and the annual pilgrimage are only found in the Sunnah and not the Qur'an.
The Sunnah also played a major role in the development of the Islamic sciences. It contributed much to the development of Islamic law, particularly from the end of the first Islamic century. Muslim mystics, known as sufis, who were seeking for the inner meaning of the Qur'an and the inner nature of Muhammad, viewed the prophet of Islam not only as a prophet but also as a perfect saint. Sufi orders trace their chain of spiritual descent back to Muhammad