Source: The Great Interpretation of Dreams (Ibn Sirin)
The Black Stone in a dream indicates Hajj, repentance, or pledging allegiance to the leader. Kissing it indicates paying off debt and repentance.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
The Black Stone indicates a scholar or a child. Touching it indicates following a scholar.
Source: Signs in the Science of Expressions (Ibn Shaheen)
The Black Stone is interpreted as goodness and blessing. Whoever sees himself touching it will attain goodness.