We have to deal with non-Muslims on a daily basis. We buy and we sell from them. Therefore, we need to treat non-Muslims with respect.
We buy something from a non-Muslim, we are polite and say thank you. If a non-Muslims buys from us we are very happy to have their business.
We have something more important than any product we buy and sell. What is it? Our deen. We need to market our deen. Prophet Muhammad (PBUH) says ” I swear by Allah if Allah uses you to guide one person it’s better for you than the red camel.”
When we talk to people we need to be polite, especially the non-Muslims. Why? Because if they were to be guided through your character then it is better for you than anything this world can provide.
Always be good and always be kind.