Sahih Muslim Book 29, Hadith Number 5636.

Chapter : The saying of the Holy Prophet (may peace be upon him): He who sees me in a dream in fact sees me.

Abu Huraira reported: I heard Allah’s Messenger (may peace be upon him) as saying: He who saw me in a dream would soon see me in the state of wakefulness, or as if he saw me in a state of wakefulness, for the satan does not appear in my form.