Source: The Great Interpretation of Dreams (Ibn Sirin)
The color yellow in a dream indicates illness, weakness, and worry.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
The color yellow indicates worship and asceticism, or jealousy and illness.
Source: Signs in the Science of Expressions (Ibn Shaheen)
The color yellow is interpreted as illness. Whoever sees himself wearing it will fall ill.