Source: The Great Interpretation of Dreams (Ibn Sirin)
A farewell in a dream indicates separation between spouses or partners. It may indicate death for the sick.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
A farewell indicates the return of a divorced woman to her husband. It may indicate the loss of a position.
Source: Signs in the Science of Expressions (Ibn Shaheen)
A farewell is interpreted as worry. Whoever sees himself bidding farewell to someone will be afflicted with worry.