Sahih al-Bukhari, Hadith 6997 ⓘ
Narrated Abu Sa`id Al-Khudri: The Prophet said, "Who ever sees me (in a dream) then he indeed has seen the truth, as Satan cannot appear in my shape."
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، حَدَّثَنَا اللَّيْثُ، حَدَّثَنِي ابْنُ الْهَادِ، عَنْ عَبْدِ اللَّهِ بْنِ خَبَّابٍ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، سَمِعَ النَّبِيَّ صلى الله عليه وسلم يَقُولُ "مَنْ رَآنِي فَقَدْ رَأَى الْحَقَّ، فَإِنَّ الشَّيْطَانَ لاَ يَتَكَوَّنُنِي" .
also referenced under: Book 91, Hadith 16 (In-Book) & Volume 9, Book 87, Hadith 126 (USC-MSA)