وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ عَطَاءِ بْنِ يَسَارٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ لَنْ يَبْقَى بَعْدِي مِنَ النُّبُوَّةِ إِلاَّ الْمُبَشِّرَاتُ ‏"‏ ‏.‏ فَقَالُوا وَمَا الْمُبَشِّرَاتُ يَا رَسُولَ اللَّهِ قَالَ ‏"‏ الرُّؤْيَا الصَّالِحَةُ يَرَاهَا الرَّجُلُ الصَّالِحُ أَوْ تُرَى لَهُ جُزْءٌ مِنْ سِتَّةٍ وَأَرْبَعِينَ جُزْءًا مِنَ النُّبُوَّةِ ‏"‏ ‏.‏

Yahya related to me from Malik from Zayd ibn Aslam from Ata ibnYasar that the Messenger of Allah, may Allah bless him and grant himpeace, said, "All that will be left of prophecy after me are themubashshirat." They said, "What are the mubashshirat, Messenger ofAllah?" He said, "The true dream which a man who is salih sees - orwhich is shown to him - is a forty-sixth part of prophecy." Translation Not Available

Book Ref: Muwatta Imam Malik Book 52 Hadith 1753
Web Ref:  Muwatta Imam Malik Book 52 Hadith 3