Yazeed Al Faarisi bin Hurmuz, who was a calligrapher of the Qur-aan, once saw Rasulullah Sallallahu 'Alayhi Wasallam in his dream during the time of Ibn 'Abbaas Radiyallahu 'Anhu. He related his dream to Ibn 'Abbaas. Ibn 'Abbaas said:
"Rasulullah Sallallahu 'Alayhi Wasallam used to say that the shaytaan cannot imitate him. That person who has seen him in a dream has really seen him'. After mentioning this he asked: 'Can you describe this person whom you have seen in your dream?'. I replied: 'Yes, I can, I will describe to you a man whose body and height were of a medium stature. He had a wheat-coloured complexion with a bit of whiteness in it. Eyes like those that had kuhl on them. A smiling face. Beautiful and round face. A compact beard which surrounded his mubaarak face, and spread on the fore-portion of the chest". 'Awf ibn Abl Jamilah, a narrator of this hadith says: "I do not remember what other feature besides these, my ustaadh Yazeed, who is a narrator of this hadith, described". Ibn 'Abbaas Radiyallahu 'Anhu said: "If you had seen him while being awake, you would not have been able to describe him any further"
App reference: Book 56, Hadith 5
English reference: Book 55, Hadith 393
Arabic reference: Book 56, Hadith 410