‏البر والصلة والآداب‏ : Hadeeth No:6240 'A'isha said: No trouble comes to a believer even if it is the pricking of a thorn that it becomes (the means) whereby his sins are effaced or his sins are obliterated. Yazid says: He does not know which word 'Urwa said (whether he said Qussa or Kuffira)....

‏السلام : Hadeeth No:5389 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Do not greet the Jews and the Christians before they greet you and when you meet any one of them on the roads force him to go to the narrowest part of it....