وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، ح وَحَدَّثَنَا ابْنُ رُمْحٍ، أَخْبَرَنَا اللَّيْثُ، عَنْ أَبِي، الزُّبَيْرِ عَنْ جَابِرٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ مَنْ رَآنِي فِي النَّوْمِ فَقَدْ رَآنِي إِنَّهُ لاَ يَنْبَغِي لِلشَّيْطَانِ أَنْ يَتَمَثَّلَ فِي صُورَتِي ‏"‏ ‏.‏ وَقَالَ ‏"‏ إِذَا حَلَمَ أَحَدُكُمْ فَلاَ يُخْبِرْ أَحَدًا بِتَلَعُّبِ الشَّيْطَانِ بِهِ فِي الْمَنَامِ ‏"‏ ‏.‏

Jabir reported Allah's Messenger (PBUH) as saying: He who saw me in sleep in fact saw me, for it is not possible for the satan to appear in my form; and he also said: When any one of you sees a hulm he should not inform anyone, for it is a sort of vain sport of devil in the state of sleep. Translation Not Available

Book Ref: Sahih Muslim Book 42 Hadith 5638
Web Ref:  Sahih Muslim Book 29 Hadith 2268 a