Hazrat Adam AS said to the angels.
"Assalamu alaikum" is how you say peace be upon you in Berber.
Assalm-u-alaikum is an Arabic word which means that "may you be in safety" and there is definitely no compulsion to be a Muslim to pray for somebody .
Most people are Muslim and say Assalamu 'alaykum
Assalamu alaikum (as-sa-la-mu-alai-kum
Salam.When we meet a Muslim we should say assalamu alaikum or assalamu alaikum WA rahmatullahi WA barakatuh and do not say hello.Saying assalamu a;laikum is a du'a and it is recommended by Allah and prophet Muhammad pbuh as the good doing or ibadah. Enforcing the peaceful situation or harmony needs more than than du'a because du'a is the weakest one.It needs action too.But action without Allah's blessing is not good. or useless..
Wa aleykum us salaam, which means "and peace to you."
The right to say "As-salamu alaikum" or "Salam alaikum" is a greeting in Islam that means "peace be upon you." It is a common Islamic greeting used to wish peace and blessings on others.
if a person says you Assalam o Alaikum (means.hello or praise be upon you)so in return a person should say Wa Alaikum us Salam which also means praise be upon you too(additional word wameans and
Assalam-u-Alaikum
You would say aslamualaiykum (āssālam 'alaykum, السلام علیکم) and the other person would respond waslamualaiykum.
السلام عليكم pronounced as As-Salam-u-Alikum.
To say "peace be with you" in Lebanese Arabic, you would say "السلام عليك" (pronounced: assalamu alayk).