Is it permissible to interpret dreams by using common books that differentiate between the meanings of various symbols, such as seeing raw fish versus cooked fish?

There is no harm in seeking assistance from reliable dream interpretation books, bearing in mind that the condition of the seer influences the interpretation of the vision. The interpretation may differ among individuals despite the similarity of the vision, as Ibn Sirin did when he interpreted the vision of the call to prayer differently for two individuals based on each person's condition.