Source: The Great Interpretation of Dreams (Ibn Sirin)
Letters in a dream indicate meanings and secrets. Each letter has its own significance according to its shape and meaning.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Letters indicate knowledge and speech. Disjointed letters may indicate scattered matters.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Letters are interpreted according to their meaning. The letter Alif indicates intimacy, Ba indicates blessing, and so on.