The Book of Jihad and Expeditions
32/4. Chapter:
The prohibition of betrayal
Sahih Muslim
وَحَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ، وَقُتَيْبَةُ، وَابْنُ، حُجْرٍ عَنْ إِسْمَاعِيلَ بْنِ جَعْفَرٍ، عَنْ عَبْدِ، اللَّهِ بْنِ دِينَارٍ أَنَّهُ سَمِعَ عَبْدَ اللَّهِ بْنَ عُمَرَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ الْغَادِرَ يَنْصِبُ اللَّهُ لَهُ لِوَاءً يَوْمَ الْقِيَامَةِ فَيُقَالُ أَلاَ هَذِهِ غَدْرَةُ فُلاَنٍ " .
This hadith has been narrated by another chain of transmitters on the authority of the same narrator, with the wording: Allah will set up a flag for every person guilty of breach of faith on the Day of Judgment, and it will be announced: Look, this is the perfidy of so and so.
Reference : Sahih Muslim 1735cIn-book reference : Book 32, Hadith 12USC-MSA web (English) reference : Book 19, Hadith 4303