‏البيوع : Hadeeth No:3810 Ibn 'Umar (Allaah be pleased with them) reported: Allaah's Messenger (sallAllaahu alayhi wa sallam) ordered to kill dogs, and he sent (men) to the corners of Medina that they should be killed....

‏الفتن وأشراط الساعة‏ : Hadeeth No:6981 Ibn 'Umar reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: You will fight against the Jews and you will kill them until even a stone would say: Come here, Muslim, there is a Jew (hiding himself behind me) ; kill him....