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Sufism

The Sunnah 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 Quran and the inner nature of Muhammad, viewed the prophet of Islam not only as a prophet but also as a perfect human being. All Sufi orders trace their chain of spiritual descent back to Muhammad. Some notable Sufis, such as Yusuf Abu al-Haggag, are directly descended from Muhammad.