Sunan Ibn Majah, Chapter: The Chapters on the Interpretation of Dreams

that Awf bin Malik narrated that the Messenger of Allah (saw) said: "Dreams are of three types: Some are terrifying things from Satan, aimed at causing grief to the son of Adam; some are things that a person is concerned with when he is awake, so he sees them in his dreams; and some are a part of the forty-six parts of prophecy." He said: "I said to him: 'Did you hear this from the Messenger of Allah (saw)?' He said: 'Yes, I heard it from the Messenger of Allah (saw), I heard it from the Messenger of Allah (saw).'"