A ---The religion of Islam is the straight path we are ordered to follow and are forbidden to leave. It is the religion with which Allah sent His Messengers and revealed His Books. He accepts none but it from His slaves, and He saves none but those who follow it. And, whosoever follows other than it, he will certainly go astray. Allah the Almighty says:

{And verily, this is My Straight Path, so follow it, and follow not (other) paths, for they will separate you away from His Path}. (AlAn'am, 153)

The Prophet (Peace be upon him) drew a line (on earth) then said: "This is the Straight Path of Allah.” Then, he drew lines to its right and left, and said: "These are paths, none amongst which is without a devil calling thereto." Then he (Peace be upon him) recited: {And verily, this is My Straight Path, so follow it, and follow not (other) paths, for they will separate you away from His Path}. (Al-An'am, 153) (Ahmed and Ibn Hibban)

He (Peace be upon him) says: "Allah set a parable of a Straight Path..” then, he said: "the Straight Path is Islam.” (Ahmed and Ibn Jarir)