What did the Prophet Muhammad (peace be upon him) say about a flag being set up on the Day of Resurrection?
 Narrated Ibn `Umar:                     Allah's Apostle said, "A flag will be fixed on the Day of Resurrection for every betrayer, and it will be announced (publicly in front of everybody), 'This is the betrayal (perfidy) so-and-so, the son of soand- so."