Holding Fast to the Qur'an and Sunnah

Bukhari :: Book 9 :: Volume 92 :: Hadith 382

Narrated 'Abdullah:

The best talk (speech) is Allah's Book 'Quran), and the best way is the way of Muhammad, and the worst matters are the heresies (those new things which are introduced into the religion); and whatever you have been promised will surely come to pass, and you cannot escape (it).

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star