Seeing a trench in your dream generally represents various aspects of your life. If it is related to a king or ruler, it may reflect your wealth and associates. If it is associated with a scholar, it symbolizes their advisors or supporters. This dream can highlight the influence of those around you and the importance of your relationships with them.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Trench" (page 449).
If it relates to the king or the ruler and his army in the dream, a trench then means one's men and wealth. If the trench relates to a scholar in the dream, then it represents his advisors, or his circle of intimates who support his theories. If it relates to one's wife, the trench then represents her guardian or her father. If it relates to one's son, the trench then represents his parents. Noticing a city without a trench or a castle to defend it in a dream means failure to pay alms or charities, wasting money, losing knowledge, the spread of evil, or an enemy attack against that city.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.
