Source: The Great Interpretation of Dreams (Ibn Sirin)
Orange in a dream indicates children. If it is sweet, it is sustenance and a righteous child. If it is sour, it is illness and worry.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Orange indicates health of the body. Collecting it indicates gathering money. Its tree indicates a righteous man.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Orange is interpreted as goodness and benefit. Whoever sees himself eating it will attain goodness.