When Allah will gather together, on the Day of Judgment, all the earlier and later generations of mankind, a flag will be raised (to mark off) every person guilty of breach of faith, and it will be announced that this is the perfidy of so and so, son of so and so (to attract the attention of people to his guilt). (Using translation from Muslim 1735a)
"إِذا جمعَ اللهُ الأوَّلين والآخرينَ يوْمَ القيامةِ. يُرفعُ لكلِّ غادرٍ لِواءُ، فقيلَ: هذه غَدْرَةُ فُلانِ بن فلان".