(22) باب إِثْمِ الْغَادِرِ لِلْبَرِّ وَالْفَاجِرِ
Narrated Anas:
The Prophet (ﷺ) said, ''Every betrayer will have a flag on the Day of Resurrection" One of the two subnarrators said that the flag would be fixed, and the other said that it would be shown on the Day of Resurrection, so that the betrayer might be recognized by it.
Reference: Sahih al-Bukhari 3186
In-book reference: Book 58, Hadith 28
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 53, Hadith 410