Source: The Great Interpretation of Dreams (Ibn Sirin)
Eating paper in a dream indicates seeking and memorizing knowledge, or gaining wealth proportionate to what is written on it, if written.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Eating paper indicates memorizing knowledge or concealing testimony.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Eating paper is interpreted as wealth or knowledge. Whoever sees himself eating it will gain wealth or knowledge.