The Prophet (peace be upon him) said: “I urge you to adhere to my Sunnah and the way of the Rightly-Guided Khaleefahs. Adhere to it and bite onto it with your back teeth (i.e., cling firmly to it). And beware of newly-invented matters, for every newly-invented matter is an innovation and every innovation is a going-astray.” (Narrated by al-Tirmidhi, al-Sunnah, 3991)
