4:86 (Y. Ali) When a (courteous) greeting is offered you, meet it with a greeting still more courteous, or (at least) of equal courtesy. Allah takes careful account of all things.

24:61 (Y. Ali)..But if ye enter houses, salute each other -- a greeting of blessing and purity as from Allah. Thus does Allah make clear the signs to you: that ye may understand.

Narrated Abu Umamah The Prophet(SAW) said: ” Those who are nearest to Allah are they who are first to give a salutation/greeting” Abu Dawood 5178

008.074.270 Narrated ‘Aisha: that the Prophet said to her, “Gabriel sends Salam (greetings) to you.” She replied, “Wa ‘alaihi-s-Salam Wa Rahmatu-l-lah.” (Peace and Allah’s Mercy be on him). Bukhari

Action plan

Islam has professed the use of the Islamic greeting when encountering another Muslim or leaving the company of another Muslim because it unifies the hearts and strengthens bonds between Muslims.

How to greet the islamic way?

The complete form for the Islamic greeting is Assalamu alaikum wa rahmatullahi wa barakatuh meaning peace, mercy, and blessings be upon from Allah (S.W.T.).

This is because Imams Abu-Dawood and At-Tirmithi reported in a good hadith that a man came to the prophet (S.A.W.) and said,

“Assalamu alaikum “ The prophet responded and the man sat down. The prophet said, “Ten rewards.”

Another man came and said, “Assalamu alaikum wa rahmatullah.” The prophet responded and the man sat down. The prophet said, “twenty rewards.”

Then another man came and said: Assalamu alaikum wa rahmatullahi wa barakatuh The prophet responded and the man sat down. The prophet said, “thirty rewards.

From the Etiquette of Salam:

1. The one who comes greets the Muslims that are present.

2. The one who is riding greets the one who is walking.

3. The one who is walking greets the one who is sitting.

4. The smaller group greets the bigger group.

5. The young greet the elder.

Source: Islamic greeting and it’s etiquette