Seeing a mule in your dream signifies that you or someone around you is behaving stubbornly or foolishly. It could represent a person who is generally perceived as unintelligent or incompetent. Dreaming of a mule may suggest that unexpected or undesirable situations are arising in your life, causing you distress. Additionally, it might hint at the possibility of a child born from an illicit relationship.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Mule" (page 296).
In a dream, a mule represents an obstinate and a stupid person, an imbecile or a bastard. A mule in a dream represents an illegitimate child who is born from a foreign father in adultery. Riding a mule in a dream means longevity or marrying a barren woman. If one sees himself mounting a saddled mule which is travelling toward Mecca in a dream, it means that he will soon perform a pilgrimage. Wandering on a mule in a dream means benefits. An obstinate mule in a dream represents a cunning person. Riding a mule in a dream also means having a dispute with someone. A weak mule who cannot be controlled in a dream represents a niggardly and a wicked person. Riding on top ofloads a mule
is carrying, and if the mule is consenting in a dream means controlling one's environment.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.