lol why would scholars wana do that? infact many "scholars" never quote this hadiths, because they wana follow their own way

here is the full hadiths

"To proceed, the best speech is the Book of Allah and the best guidance is the guidance of Muhammad (PBUH), the worst practice is the introduction of new practices in Islam and every Bid`ah is a misguidance". [Muslim]

also this hadiths is more obvious

"If anybody introduces a practice which is not authenticated by me, it is to be rejected". (Sahih Muslim)

and the hadiths of ummul mumineemn Hadhrat Aisha (RA)...

If anyone introduces in our matter something which does not belong to it, will be rejected".

[Al-Bukhari]

bidaah is simple, if the Prophet (Saw) never did a religious act, dont do it, we aint better then the Prophet (Saw) he did everythin, that could bring us closer to Allah (Swt)