I heard Messenger of Allah ﷺ as saying: He who saw me in a dream would soon see me in the state of wakefulness, or as if he saw me in a state of wakefulness, for the satan does not appear in my form.

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ رَآنِي فِي الْمَنَامِ فَسَيَرَانِي فِي الْيَقَظَةِ أَوْ لَكَأَنَّمَا رَآنِي فِي الْيَقَظَةِ لاَ يَتَمَثَّلُ الشَّيْطَانُ بِي