“Whoever sees me in a dream has (really) seen me, for Satan cannot appear in my form.” (Using translation from Ibn Mājah 3901)  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ رَآنِي فِي الْمَنَامِ فَقَدْ رَآنِي فَإِنَّ الشَّيْطَانَ لَا يَتَمَثَّلُ مِثْلِي  

He who saw me in dream in fact saw the truth (what is true). (Using translation from Muslim 2267a)   

قَالَ رَسُولُ اللَّهِ ﷺ «مَنْ رَآنِي فِي الْمَنَامِ فَقَدْ رَأَى الْحَقَّ»