عَنْ أَبِي مُوسَى قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا بَعَثَ أَحَدًا مِنْ أَصْحَابِهِ فِي بَعْضِ أَمْرِهِ قَالَ: «بَشِّرُوا وَلَا تُنَفِّرُوا وَيَسِّرُوا وَلَا تُعَسِّرُوا»

Abu Sa'id reported the Prophet as saying, “Every perfidious one will have a standard at his anus on the day of resurrection.” A version has, “On the day of resurrection every perfidious one will have a standard which will be raised for him according to the amount of his perfidy, and no one is more perfidious than the ruler of a community.” Muslim transmitted it.