Dreaming of jealousy indicates potential losses in your life. Jealousy is a negative emotion that creates unrest among people. If you see someone feeling jealous of you, it may reflect a lack of self-confidence or tension in your relationships. However, if you triumph over jealousy in your dream, it suggests the possibility of improvement in your circumstances.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Jealousy" (page 231).
Jealousy means losses for the one experiencing it in the dream. A jealous person has an evil quality, and jealousy is evil. If one who suffers from people's jealousy sees his condition improving in a dream, it means poverty, rancor, spite, black magic, or malice for the jealous person and benefits for the victim of jealousy. In a dream, jealousy also represents covetousness, grudges, avarice and love for the world. To devastate someone by looking at him with despise in a dream means that the assailant will suffer from the jealous eye of his victim. (Also see Jaundice)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.