Amir al-mu'minin has held two categories of persons as the most detestable by Allah and the worst among people. Firstly, those who are misguided even in basic tenets and are busy in the spreading of evil. Secondly, those who abandon the Qur'an and sunnah and pronounce injunctions through their imagination. They create a circle of their devotees and popularise the religious code of law concocted by themselves. The misguidance and wrongfulness of such persons does not remain confined to their own selves but the seed of misguidance sown by them bears fruit and growing into the form of a big tree provides asylum to the misguided and this misguidance goes on multiplying. And since these very people are the real originators the weight of other's sins is also on their shoulders as the Qur'an says:
And certainly they shall bear their own burdens, and (other) burdens with their own burdens... (29:13)
