Greetings

1.  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).

2.  One who is riding should salute one who is walking, one who is walking should salute one who is sitting and a small company should salute a large one.
(Bukhari, Muslim).

3.  Allah's messenger (p) passed a mixed company of Muslims, polytheists who worshipped idols and Jews and he gave them a salutation.
(Bukhari, Muslim).

4.  Those who are nearest to Allah are they who are first to give a salutation.
(Ahmad, Tirmidhi, Abu Dawud).

5.  When you go into your family, son, give a salutation. It will be a blessing both to you and to your family.
(Tirmidhi).