The prophet says (salla Allahu alaihi wa sallam) “the one that has seen me in his dream then he has seen me, this is an honor to see the prophet in your dreams, but providing it is his description. So if you see the prophet in your dreams as a 5 foot tall man, then this is not the prophet (salla Allahu alaihi wa sallam) because he was not that short. His description is well known, it’s well documented.