I heard the Messenger of Allah (May peace be upon him) say : He who sees me in a dream will see me when awake or as if he will see me when awake, for the devil does not take my likeness.
Sunan Abi Dawud Book 43, Hadith 251
← Previous Hadith When one of you sees a vision which he dislikes, he must spit on his left (three times), seek refuge in Allah from the devil three times, and turn from the side on which he was lying.

Sunan Abi Dawud Book 43, Hadith 250 Next Hadith → If anyone makes a representation of anything, Allah will punish him on the Day of Resurrection for it until he breathes into it, but he will be unable to do so. If anyone pretends to have had a dream which he did not see, he will be ordered to tie a knot in a grain of barley. If anyone listens to other people’s talk when they try to avoid him, lead will be poured into his ears on the Day of Resurrection.

Sunan Abi Dawud Book 43, Hadith 252