‏الصلاة : Hadeeth No:906 Abdullah (b. Mas'ud) said: I was not with the Messenger of Allaah (sallAllaahu alayhi wa sallam) but I wish I were with him....

‏الجهاد والسير‏ : Hadeeth No:4308 Anas reported Allaah's Messenger (sallAllaahu alayhi wa sallam) having said this: There would be a flag for every perfidious person on the Day of Judgment by which he will be recognised....