If you see a swine in your dream, it may symbolize a formidable enemy in your life. This enemy could betray you and cause anxiety in your thoughts. Dreaming of traveling with a swine suggests that you might be facing a dangerous situation where caution is necessary. This dream warns you that some people may be dishonest towards you, and you should not rely on their words.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Swine" (page 424).
In a dream, a swine represents an avowed and a fierce enemy who is perfidious, worrisome, anxious, who does not act upon what he says and who lies and tricks people. Riding a swine in a dream means that he will earn a large some of money. If one eats it raw, cooked, or broiled in the dream, it means that he swallows unlawful money, or knowingly eats impermissible food. Walking like a swine in a dream means turning quick profits from an investment or a business, or it could mean that one will acquire what his heart desires. A wild pig in dream is a sign of a severe cold weather, Eating ham in a dream carries benefits for all people, though it is unlawful for Muslims. Ifone sees a pig in his bed in a dream, it means that he will commit adultery. Little pigs in a dream represent adversities and distress for their owner, or for the person seeing the dream. A domesticated swine in a dream means good harvest, prosperity, or satisfying one's needs and desires. Seeing a swine in a dream also may mean presiding over people of opposing or diverse opinions, or it could mean divorce, evil happenings, spendthrift, acquiring demonic nature, earning illegal money, or having a large progeny. If a pig causes harm to someone in a dream, it represents the perfidy of one's rival. Swine's milk in a dream represents a heartbreaking loss of money, or it could mean committing a major sin. Ifone sees little pigs entering his house in a dream, it represents an official inspection of one's private life. If one sees himself kicking little pigs out of his house in a dream, it means that he will resign from working for the government.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.