If you see an unknown person in your dream, it may represent yourself. If that person is doing good deeds, it could symbolize your own positive actions. Conversely, if they are behaving poorly, it might reflect your own negative actions. This dream provides you with an opportunity for self-reflection, allowing you to think about your behavior and decisions.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Human being" (page 217).
To see one of the children of Adam (uwbp) one does not recognize in the dream perhaps may represents oneself. Ifhe does good, then it represents one's own deeds, and if does evil, the seer may pursue the same. Ifone recognizes such a being in the dream, it means that he will receive something from him. Ifone likes what he receives from him in the dream, it means that he will attain his personal goals. Ifhe receives a shirt in the dream, it means an appointment to a high ranking position. If he receives a rope in the dream, it means an agreement, a commitment or a covenant. If he takes money from him in the dream, it represents something he will lose and forgo in despair, or perhaps that a fight will take place between them. Each human being in a dream represents himself, his kind, look alike, someone by the same name, his town, or his craft. If the person whom he recognizes in the dream holds an elevated rank, it means that he will lose it, and if he holds a lower rank, it means that he will be promoted. (Also see Man; Mankind)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.