(4) باب تَحْرِيمِ الْغَدْرِ
It is narrated on the authority of Abu Sa'id that the Messenger of Allah (ﷺ) said:
On the Day of Judgment there will be a flag fixed behind the buttocks of every person guilty of the breach of faith.
Reference: Sahih Muslim 1738 a
In-book reference: Book 32, Hadith 18
USC-MSA web (English) reference(deprecated numbering scheme): Book 19, Hadith 4309