"to them five prayers is an addition to what is found in the Quran and is shirk"
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I tend to be more of a Qur'anist too, but accept the odd hadith if in harmony with the Qur'an. The companions/wife of Muhammad make observations - his explanations of the words of the Qur'an further to more divine guidance.
I think you mean innovation (altetation/deviation) as opposed to shirk (taking partners/others in worship other than God).
We have a broad "church" if you get my meaning in my local mosque some days - some using prayer beads like Catholics, some rocking backwards and forwards in prayer like Jewish, some repetitive chant to release their inner eye like Hindus. So lots of innovation lol lol - but we're not to judge others - just self-judging.
