The extent to which Islam has been corrupted is illustrated in the following table:

Innovation Violated Quranic Principles
Hadith & Sunna 6:19, 38, 114; 7:1-3; 12:111;
17:46; 31:6; 45:6; 69:38-47; plus more.
Killing whomever they consider an apostate 88:21-22.
Vicious criminal justice system:   
Cutting off the hand of the thief 5:38, 12:31.
Stoning the adulterers to death 4:25, 24:2.
Killing anyone who does not observe Salat 2:256, 18:29.
Killing one who drinks alcohol for the 4th time  2:256, 18:29.
Forbidding menstruating women from worshiping  2:222.
Forbidding women from the Friday Prayer 62:9
Idolizing Muhammad against his will:   
calling him "the most honorable messenger" 2:285. 
claiming that he was infallible   4:79; 9:117; 17:73-74; 33:37;
40:66, 66:1; 80:1-10; 93:7.
Setting up his tomb as a "Sacred Mosque" 2:149-150.
Claiming that he possesses power of intercession  2:48,123,254; 6:70,94; 7:53;
10:3; 39:44; 43:86; 74:48.
Inventing an indefensible story about his ascension
to the heavens on a horse, at the speed of light,
and talking God out of 50 Salat prayers. At 
the speed of light, he would still be traveling
within the Milky Way Galaxy.
 
17:1; 53:1-18. 
Adding his name in the Salat prayers & Azan 20:14; 72:18.
Adding his name to the First Pillar of Islam  3:18; 37:35; 39:45
Insulting Muhammad by depicting him as a vicious man:  
They claim he gouged out people's eyes 3:159; 68:4.
Claiming he possessed sexual power of 30 men  18:110; 25:20.
Nullifying the fact that Muhammad was the last prophet
by teaching that Jesus will come back to this
world. This makes Jesus the last prophet.
33:40 
Claiming that Muhammad was illiterate, un-intelligent. see Appendix 28.
A bizarre dietary system with multitudes of 
prohibitions
6:145-150; 16:115,116
Altering the Sacred Months 9:37.
Neglecting the Zakat charity through distortion 6:141, Appendix 15.
Oppressing women and forcing them to wear head-covers
and unreasonable clothes; and depriving them of
all rights in marriage, divorce, inheritance, etc.

Insulting women by instituting that "if a monkey, dog, or a woman passes in front of a praying person, his prayer is nullified"(Hadith)
2:228; 3:195; 4:19,32; 9:71.
Inventing numerous rules from ablution, to prayer,
to sleeping, to cutting one's nails
2:67-71; 5:101; 42:21.
Prohibiting gold and silk for men  5:48-49; 7:31-32.
Prohibiting music and the arts  7:32; 34:13; 42:21.
Ridiculing Islam by stating that the earth is built on top 
of a giant whale!! (79:30; Ibn Kathir,1200 AD & Ben Baz, 1975 AD)

This is only a minute sample of the violations committed by the "Muslims" on a daily basis. This is why God has sent His Messenger of the Covenant now.

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