Stoning the Adulterer is Effective Because?

[Simsim]

Well from my years of studying Islam and practicing it, I'm well acquainted with what are known as Quranists (rejecting the Ahadith and living by the Qur'an only as their source for religion)...

I looked into their theories and wanted to believe in what they were saying at the time, because I had many problems with ahadith myself, but the fact remained that Islam and Muhammad and the rest of the historical figures in Islam have absolutely no ground to stand on without the assistance of ahadith.

If you throw all of the hadith out then you're really left with confusion and so much room for interpretation that it feels incomplete.

I know Qur'nists. I have been arguing with them over several issues. But I was not talking about them in my post. I was talking about people who are, officially, Sunni but they have some tendency to Qur'anism.

OK, from even the religious fundamentalism viewpoint hadiths sahih (accurate sayings) are not considered to an absolute certainty to be said by Mohammed but they are, to a large extent, supposed to be said by the him. This is the crucial point from which most moderate cultured Muslims run their inadequate "reformations", that Mohammed's hadiths are not certain to be said by him. This gives them the courage to refuse many religious texts and, subsequently, the religious teachings which are based upon them.