(4) باب تَحْرِيمِ الْغَدْرِ
'Abdullah reported Allah's Prophet (ﷺ) as saying:
There will be a flag for every perfidious person on the Day of Judgment, and it would be said: Here is the perfidy of so and so. (ID)
Reference (ID): Sahih Muslim 1736 a (ID)
In-book reference (ID): Book 32, Hadith 14 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 19, Hadith 4305 (ID)