It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he heard the Messenger of Allah (peace and blessings be upon him) say: "A banner will be set up for the betrayer (on the Day of Resurrection), then it will be said: This man was (a betrayer) in such-and-such a matter, and he did such-and-such in it."
Imam al-Tabarani (may Allah have mercy on him) said: "Only Amr bin Atiyyah narrated this hadith through Atiyyah from Sayyiduna Abu Hurayrah (may Allah be pleased with him); Abdullah bin Yahya is alone in narrating it, whereas people narrated it through Atiyyah from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him)."