Maliks Muwatta Book 052, Hadith Number 003.

Section : Visions.

Yahya related to me from Malik from Zayd ibn Aslam from Ata ibn Yasar that the Messenger of Allah, may Allah bless him and grant him peace, said, "All that will be left of prophecy after me are the mubashshirat." They said, "What are the mubashshirat, Messenger of Allah?" He said, "The true dream which a man who is salih sees or which is shown to him - is a forty-sixth part of prophecy."