Islamic Interpretation of Dreams (Ibn-i Sirin):

(Conceit; Vainglory; Vanity) In a dream, pride or vainglory signifies oppression and injustice. Every conceited person in a dream is an unjust person in reality.lfone sees a deceased person showing pride in a dream, it means that he is one at whom God Almighty does not look on the Day of Judgment, and particularly if he looks different in the dream.

If one is proud of himself, his wealth, or power in a dream, it means that he oppresses others.