Source: The Great Interpretation of Dreams (Ibn Sirin)
A cracked wall in a dream indicates weakness in the man's condition, his illness, or the approach of his end.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
A cracked wall indicates worries and problems in the family.
Source: Signs in the Science of Expressions (Ibn Shaheen)
A cracked wall is interpreted as worry and illness.