Source: The Great Interpretation of Dreams (Ibn Sirin)
Getting lost in a dream indicates confusion and misguidance in religion or worldly life. Losing one's way indicates following falsehood.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
Getting lost indicates unemployment and poverty. Losing something indicates losing it in wakefulness.
Source: Signs in the Science of Expressions (Ibn Shaheen)
Getting lost is interpreted as worry. Whoever sees himself lost will be afflicted with worry.