Islamic Interpretation of Dreams (Ibn-i Sirin):
(Foolish talk; Nonsense; or peopleâs foolish talk) Blunder in a dream means disobedience, sin or refusing to accept a good advice.
To make a foolish oath in a dream means repentance of a sinner and guidance for a disbeliever.
(Also see Grammarian; Fool; Linguist; Lying)
