There is nothing to be confused. syed_saalim request help with evidence in quran or hadith to greet someone non-muslim. simple answer is you can't greet someone with salam of Allah. Because he/she doesn't believe Allah. So you can say Hi There, Hello or Salam but it doesn't mean anything...
“When you are greeted with a greeting, greet in return with what is better than it, or (at least) return it equally.”
[al-Nisa’ 4:86]
It is not permissible – firstly – to initiate the greeting of salaam to a non-Muslim. The Prophet (peace and blessings of Allaah be upon him) said:
“Do...