‏الجهاد والسير‏ : Hadeeth No:4304 Ibn Umar reported that he heard the Messenger of Allaah (sallAllaahu alayhi wa sallam) saying: There will be a flag for every perfidious person on the Day of Judgment....

‏الألفاظ من الأدب وغيرها‏ : Hadeeth No:5589 Abu Huraira reported from Allaah's Messenger (sallAllaahu alayhi wa sallam) various ahadith, one of which is this that he said: None of you should use the word al-karm for 'Inab, for karm (worthy of respect) is a Muslim person....