Islamic Interpretation of Dreams (Ibn-i Sirin):

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.