Seeing oneself recite Surah Nun or one of its verses, or hearing it recited over oneself, signifies being granted eloquence and oratory, intelligence, knowledge, and good character.
Ja'far al-Sadiq said that God grants the person eloquence, knowledge, and oratorical ability. Reciting this surah in a dream also signifies loving to perform good and charitable deeds, generosity and liberality, and giving charity.