What rules do Muslims have to follow?
Muslims are bound by the Qur'an to follow Divine Mandates as
those are in the Qur'an and as those were exemplified by Muhammad
in his life. These commands are interpreted and applied by Islamic
Scholars or Faqihs who clarify a broad base of law that applies to
Muslims. This law is the called the Proper Path or
There are numerous specific rules. If you want to read about particular moral questions, I have included a link to a website that describes various Shari'a Laws: Sharia: A Practical Guide.
They are Quran instructions and Prophet Muhamed's guidelines , both are classified under Goodness , which can be well-estimated by proper Human mind and in accordance with right deeds as a whole