Yahya related to me from Malik from Ishaq ibn Abdullah ibn AbiTalha from Zufar ibn Sasaca from his father from Abu Hurayra that whenthe Messenger of Allah, may Allah bless him and grant him peace, leftthe morning prayer, he would say, "Has any of you had a dream lastnight? All that will remain of prophecy after me will be the truedream ."
USC-MSA web (English) reference: Book 52, Hadith 2
Arabic reference: Book 52, Hadith 1752