Source: The Great Interpretation of Dreams (Ibn Sirin)
Lying in a dream indicates false testimony, misguidance, and corruption in religion. Whoever sees himself lying will fail in his argument and lose.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Lying indicates poverty and need. Whoever sees himself lying against God has disbelieved.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Lying is interpreted as worry. Whoever sees himself lying will be afflicted with worry and humiliation.