Final answer:
Next to the Qur'an, the Hadith and Sharia law are also considered authoritative in Islam. The Hadith consists of the sayings and actions of Muhammad, forming the basis for Islamic law and ethics. The oral tradition of reciting the Qur'an remains an essential practice in Islamic faith.
Step-by-step explanation:
In Islam, in addition to the Qur'an, which is regarded as the primary divine revelation gave to the Prophet Muhammad, other writings considered to be authoritative include the Hadith and the Sharia law. The Hadith is a collection of sayings, actions, and approvals of Muhammad that provide guidance on how to lead a righteous life. They are a critical source of Islamic law and moral guidance, second only to the Qur’an in importance. Following the death of Muhammad, Muslim leaders developed Sharia law, a systematic legal framework derived from both the Qur'an and the Hadith.
It is interesting to note that the Qur'an was originally transmitted orally before being compiled into a textual format. This strong oral tradition reflects the essence of its name, as 'Qur'an' comes from the Arabic for recitation. Despite the text's transmission to written form, recitation of the Qur'an still holds great devotional value, particularly in formal daily prayers performed in Arabic.