Hadith 6177

Narrated Ibn `Umar:

The Prophet said, "For every betrayer (perfidious person), a flag will be raised on the Day of Resurrection, and it will be announced (publicly) 'This is the betrayal (perfidy) of so-and-so, the son of so-and-so.' "

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ الْغَادِرُ يُرْفَعُ لَهُ لِوَاءٌ يَوْمَ الْقِيَامَةِ، يُقَالُ هَذِهِ غَدْرَةُ فُلاَنِ بْنِ فُلاَنٍ ‏"‏‏.‏

Reference: 174940
In-book reference: Book 78, Hadith 6177
Hadith 6177 - Good Manners and Form (Al-Adab) - Sahih al-Bukhari - Sunnah.com