Seeing wheat in your dream generally signifies good news regarding financial gain. If you dream of buying wheat, it indicates an increase in your earnings or suggests the possibility of expanding your family. The dream of wheat can symbolize success and prosperity in your life, which will come as a result of your hard work.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Wheat" (page 474).
In a dream, wheat means money well earned. Buying wheat in a dream means increase in one's earnings, or in the number of his children. If one sees a ruler placing a stick and steering inside a bushel of grains in a dream, it means rising prices. Planting wheat in a dream means doing a good deed for God's pleasure. Walking in wheat fields in a dream means offering a service to God Almighty. If one plants wheat but it sprouts barley instead in a dream, it means ostentatiousness. If it grows blood in the dream, it means that he profits from usury. Eating green wheat in the fields from its spikes in a dream means gaining spiritual progress through ascetic detachment. Eating cooked wheat in a dream means afflictions. Holding a bundle of ears of wheat, or placing them inside a pot in a dream means profits equal to the number of spikes one has
gathered. Harvesting wheat outside the season in a dream means death, destruction, deception and trials for the people of that locality. Harvesting green spikes of wheat in the dream means the death of a young person, but if they are yellow and dry, then they mean the death of an elderly person. Bartering wheat for barley in a dream means replacing the Qur'anic recital with interest in poetry. Seeing wheat over one's bed in a dream represents one's wife. Planting its seeds in a dream means conceiving a child. In a dream, wheat also represents a cautious person who manages his affairs with wisdom and who spends his money to help people without being a spendthrift.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.