question #3 Sahih al-Bukhari 6177, Book 78, Hadith 201 : What significance does the raising of a flag have for a betrayer on the Day of Resurrection?

The Prophet (ﷺ) said, “For every betrayer (perfidious person), a flag will be raised on the Day of
Resurrection, and it will be announced (publicly) ‘This is the betrayal (perfidy) of so-and-so, the son
of so-and-so.’ ”