[Yetanfou]

> Each sect has a different Quran, different Sharia, different precepts

Uhhhh no. The koran is the koran is the koran. Written in Arabic, not a single letter to be changed because it is 'perfect' according to itself [1]:

   And the word of your Lord has been fulfilled in truth and in justice.
   None can alter His words, and He is the Hearing, the Knowing.

The Hadith are another story, not so much their contents but which ones are followed.

[1] http://corpus.quran.com/translation.jsp?chapter=6&verse=115

[tptacek]

The interpretation of the Koran differs significantly between Shia and Sunni Islam.

https://en.wikipedia.org/wiki/Tafsir