It wasnarrated from Abu Sa'eed Al-Khudri that the Messenger of Allah(ﷺ) said:
"For every traitor a banner will be set up on the DayofResurrection, commensurate with his treachery." (ID)
English reference (ID): Vol. 4, Book 24, Hadith 2873 (ID)
Arabic reference (ID): Book 24, Hadith 2983 (ID)