Final answer:
In Islam, Muhammad is a prophet, not a god, and the Qur'an is the sacred text. The religion's core principles are the Five Pillars, and sharia law is derived from Islamic teachings, not authored by Muhammad directly.
Step-by-step explanation:
The religion of Islam is a monotheistic faith that holds several core beliefs which are crucial to understanding its tenets. Contrary to one of the options given, Muhammad is not believed to be a god but is seen as a prophet, the last in a line of prophets that includes figures like Abraham, Moses, and Jesus. The core beliefs of Islam are encapsulated in the Five Pillars, which express the fundamental practices and principles of the faith, including the shahada, or profession of faith, that there is no god but Allah, and Muhammad is His messenger. The Qur'an is the holy scripture of Islam, regarded by Muslims as the verbatim word of Allah, revealed to Muhammad. It's important to note that, according to Islamic tradition, the Sharia, which is Islamic law, was not written by Muhammad but is derived from the Qur'an and the Hadith, which are the recorded sayings and actions of Muhammad.