Source: The Great Interpretation of Dreams (Ibn Sirin)
Seeing a deceased scholar in a dream indicates the appearance of heresy or misguidance in that place.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Seeing a deceased scholar alive indicates the spread of his knowledge and people being guided by it.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Seeing a deceased scholar is interpreted as the spread of ignorance and misguidance.