If you see wailing in your dream, it usually indicates that something bad may happen. Crying can symbolize the sorrow of losing something in your life or a deep yearning for certain things. Sometimes, it may also represent a priest or some form of impurity that is causing unrest or discomfort in your mind. Such dreams encourage you to become aware of your emotions and reflect on certain aspects of your life.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Wailing" (page 465) â resolved via the equivalent "Lamenting" entry.
Lamenting and desiring something in a dream connotes evil. Lamentation in a dream also represents a preacher or it could represent a putrid odor that comes from opening the door of a filthy lavatory. Lamentation in a dream also represents dogs' yowling, drum beating, the ringing sound of cymbals, or it could mean a wedding. Sitting in a place where people are lamenting and mourning their dead in a dream means that an ominous evil may take place in that locality, or perhaps it could mean separation between families and friends. If one sees himself mourning a deceased person in a dream, it means that harm will come to him from the descendents or family of the departed person. Lamenting with great pain and sorrow and mourning over a deceased person in a dream also means waking up to a great joy and happiness. Lamenting in a dream also means adversities which are driven by the person who is lamenting. It also means going astray, or it could denote a flute, as the flute denotes lamenting in a dream. Lamenting in a dream also represents the work of ignorance.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.