Orthodoxy and unorthodoxy from the viewpoint of Shia

In this essay, the Shia view of orthodoxy and unorthodoxywill be discussed. According to the findings of this research the word "Sunnah" means method and there are so many meaning for the technical meaning of this word. One of the technical meanings of "Sunnah" is the opposite of "unorthodoxy" and creating something new that has not been part of religion. The Suni sect also accept this meaning. In the Muslim world, unorthodoxy means entering something new in religion that has not been originally part of that religion. This has a negative meaning. The Shia scholars have determined some criteria for discerning something unorthodox. 1- manipulating in religion 2- entering something new in religion that has no roots in it. From the Shia point of view, the unorthodoxy is haram and forbidden. There are some hadiths that prove this idea.