“I heard Imam Ali (a.s.) narrate from the Holy Prophet (s.w) who said: ‘The scholars are of two kinds: One kind consists of those who uphold their knowledge and they gain their salvation. The other kind consists of those who disregard their knowledge and they face their destruction. The people of hell will suffer from the bad odor of the scholars who do not act according to their knowledge. Of the people of hell the one who will regret most will be a man who teaches someone and shows him the way of Allah. The student accepts and acts according to such teachings and consequently Allah takes him to paradise but the teacher is sent to hell because of ignoring his knowledge, following his desires and entertaining long hopes. Following ones’ desires bars one from the truth. And cherishing long hopes causes one to forget the next life.’”