Source: The Great Interpretation of Dreams (Ibn Sirin)
Heat in a dream, in its season, indicates fertility and sustenance. Out of its season, it indicates illnesses and worries.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Heat indicates poverty and debt. Whoever sees himself being harmed by heat will be afflicted with worry.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Heat is interpreted as worry. Whoever sees himself in heat will be afflicted with worry.