SALUTATIONS

103.There are six good qualities which one believer should display to another; he should visit him when he is ill, be present when he dies, accept his invitation when he gives one, salute him when he meets him, say 'Allah have mercy on you' when he sneezes and act sincerely towards him whether he is absent or present.(Nasai).
(Sayings of Muhammad (pbuh). by Prof. Ghazi Ahmad).