Seeing a shadow in your dream can symbolize the subconscious, hidden aspects, and mysteries of your life. This dream may carry important messages about various facets of your existence. Understanding the nature of the shadow and its connection to your current life circumstances can help you interpret its meaning. This symbol may reflect your deepest desires and fears, urging you to confront what lies beneath the surface.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Shadow" (page 382).
In a dream, a shadow represents changes affecting one's life in the world and his elevation or abasement. A shadow in a dream also means guidance, repentance, true monotheism and contemplating the Maker and His creation. If one moves but does not see his shadow moving in a dream, it means abrogating the laws, discarding what is permissible, adopting what is unlawful, death, becoming motionless, or losing one's senses. The same interpretation applies if one's shadow disappears under the sunlight, or under the moonlight, or in the night lights, or if his reflection disappears from the water surface, or from any shiny surface. If one sees his shadow dancing in a dream, it means falsehood, lies, stealing people's money, shifting one's faith according to one's personal interests, or that he criticize the conduct of God's Prophet, upon whom be peace. Dancing one's shadow over a carpet in a dream means invoking evil spirits, speaking their words after being possessed by them, and it means trials, temptations and evil. (Also see Shade) ~ahada: (arb. Tashahhud) A sitting posture during one's prayers which includes the proclamation of God's oneness ti.e., I bear witness that God is one, no associate has He, and I bear witness that Muhammad is His servant and Messenger.) To see oneself offering the testimony of faith in a dream means the lifting of his adversities and achievement of his goals.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.