Source: The Great Interpretation of Dreams (Ibn Sirin)
Marrying a second wife in a dream indicates abundance in sustenance or authority and position according to the woman's beauty.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Marrying a second wife may indicate worry and grief or a new partnership.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Marrying a second wife is interpreted as goodness, benefit, and abundance in the world.