The Messenger of Allah ﷺ said, "Every traitor will have a banner on the Day of Resurrection by which he will be recognized."
حدثنا الفضل بن دكين حدثنا سفيان عن عبد الله بن دينار
قال رسول الله ﷺ لكل غادر لواء يوم القيامة يعرف به
Its isnad is sahih, and it is a repeat of 5915.