Islamic Interpretation of Dreams (Ibn-i Sirin):

(Muteness; Silence) In a dream, dumbness means corruption in one’s religious commitment or falsehood.

If one sees himself dumb in a dream, it means that he insults the companions of God’s Prophet, upon whom be peace, or backbites honorable people, or that he is a reprobate and an insolent person.

Ifone sees himselfmute in a dream, it means that he is ignorant. Dumbness in a dream means rescinding a court decision, or to remain silent when one is supposed to speak. Dumbness in a dream also means dethroning or terminating one’s employment, If one sees his tongue tied up in a dream, it means that he will gain eloquence, mastery of words, clarity of speech, wisdom in his words and prosperity, and it means that he will win victory over his enemy.