The Prophet (peace and blessings of Allah be upon him) said:
“The most truthful of speech is the Book of Allah and the best of guidance is the guidance of Muhammad, and the most evil of things are those which are newly-invented.”
And he (peace and blessings of Allah be upon him) said:
“Whoever innovates anything in this matter of ours (i.e., Islam), that is not part of it will have it rejected.”
[Bukhaari 2697]
