The Prophet (salla'Allaahu 'alayhi wa sallam) said, ".... I have left you upon clear guidance. Its night is like its day. No one deviates from it after me except that he is destroyed." Reported by Ahmad, Ibn Maajah (no. 43) and al-Haakim. It is declared saheeh by Shaikh al-Albaanee in as-Saheehah (no. 937). Imaam Maalik (rahimahullaah) said: "Whosoever introduces into Islaam an innovation, which he deems is good, then he has claimed that Muhammad has betrayed (the trust of conveying) the Message. Read the saying of Allaah, the Mighty and Majestic: 'This day I have completed your Religion for you, and I have perfected My favou...