Where does “салам алейкум” come from?

салам алейкум (Chechen) comes from Arabic اَلسَّلَام عَلَيْكُم — peace be upon you.

салам алейкум (Chechen): salaam alaikum

Definitions

Step	Language	Word	Meaning
1	Arabic	اَلسَّلَام عَلَيْكُم	peace be upon you

салам алейкум — Etymology, Origin & Word History | Etymology Explorer