Answer:
Sharia
Explanation:
Sharia are the laws that are believed to be derived from the life of Prophet Muhammad and Quran. Various Muslim nations try to implement it within their territories but the authenticity of such laws is questionable.
The collection of saying of prophet is called Hadith. The most famous and well known collection is the one that was brought together by Bukhari after the death of Prophet. He used scientific methodology to collect the sayings.
