If one sees listening or reciting Surah Rahmaan in his dream, then here is the dream explanation, meaning and Islamic interpretation Surah Rahmaan.
Islamic Dream Interpretation Reciting Surah Rahmaan
If one sees reciting Surah Rahmaan in his dream, it means that he will be bestowed with the bounties of Allah in the world and His mercies in the hereafter. Source: Ibn Sirin