Dreaming of a rat can symbolize caution, adaptation, and resources. The interpretation of this dream can vary based on your current life situation, emotions, and experiences. Your personal feelings and experiences related to rats can help you understand the meaning of this dream. It may relate to your present circumstances and future goals, reflecting what you need to be aware of or adapt to in your life.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Rat" (page 353).
A rat in one's house in a dream means that he will emigrate from one land to another. If the person seeing the dream owns a house, it means that he will sell it. Rats in one's house in a dream also represent thieves one must guard his house against, or that he must guard himself against the betrayal of a close acquaintance. Eating a rat in a dream means backbiting others, or earning unlawful money. In general, rats in a dream represent insolence, causing damage, fornication, adverse marital conditions, or problems in the upbringing of one's children. Catching a rat in a dream means suffering from humiliation and despise.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.