Exhortation to have pleasing manners
The way a Muslim is an embodiment of peace and security for another Muslim, in the same way, he/she is an embodiment of peace for a non-Muslim as well. Let alone swords, arrows and other weapons a Muslim doesn’t hurt anyone with his/her tongue. A real Muslim’s talk is sweet and pleasing. Almighty Allah says in the Holy Quran:
وَقُولُواْ لِلنَّاسِ حُسْناً
Speak politely and in a pleasant manner.
To treat others in a pleasing and courteous manner, Islam has not discriminated between Muslims and non-Muslims, but this command is for one and all.
Non-Muslims also should be spoken to sweetly and courteously. The Holy Prophet (Sallallahu alaihi wa sallam) has said:
وَخَالِقِ النَّاسَ بِخُلُقٍ حَسَنٍ
Translation: Behave with everyone with good manners.