It is for this reason that the Sunnah and the Shari’ah which are the Holy Prophet's  ways should be grasped firmly and no other way should be acted upon nor believed in. Allah Most High says in the Quran thus: -

It says in a Hadith that is reported from Hazrat Jabir  "We were sitting in the Holy Prophet's  company. In front of himself he drove a long straight line and said: "This is the path of Allah.' Then he drove two lines on its right and left and said: "These are the satanic paths,' and putting his finger on the central line he recited the above mentioned verse.

It is stated in a tradition of the Tirmizi Sharif that the Holy Prophet  said: "Allah Most High has described the example of the straight path like that road on both sides of which there are two walls, having many doors, all of which are open and curtains are hanging on each. At the end of this road is a caller who says: "People! Come all of you to this straight path; don't remain dispersed." In the midst of the path also there is a man. When any man wants to remove the curtains of these doors to see inside, the caller (at the middle of the road) says:

'Ah! Pity! Do not look, do not open it. If you look at it and open it, you will be far removed from this path.' Then, the straight path is Islam and both the walls are the divine limits. The open doors are things declared illegal by Allah. The caller at the end of the road is the Divine Book and the caller from above is a divine adviser who lives in every believer's heart."