Seeing Prophet Muhammad in a dream

Narrated Anas:

The Prophet (ﷺ) said, "Whoever has seen me in a dream, then no doubt, he has seen me, for Satan cannot imitate my shape.

Reference  : Sahih al-Bukhari 6994

In-book reference  : Book 91, Hadith 13

USC-MSA web (English) reference : Vol. 9, Book 87, Hadith 123

https://sunnah.com/bukhari:6994