The practices and traditions
(Sunnah) of the Prophet which includes his sayings (Hadith) became the
guide for Muslims in the understanding of the Quran and the practice of
their religion. The Quran itself asserts that God has chosen in the Prophet
an example for Muslims to follow. Besides this emulation of the Prophet
in all aspects of life and thought, his sayings were assembled by various
scholars. Finally they were codified in books of Hadith where the authentic
were separated from the spurious. The Sunnah has always remained, after
the Quran, the second source of everything Islamic.