It is to be stressed that Islam teaches its adherents to interact with all people and wish good for the whole of mankind. Muslims are taught to care for all people regardless of their faith or their opinions. In their relationship with non-Muslims, Muslims should be aware of and observe their religious duties.
Dr. Muzammil H. Siddiqi, former President of the Islamic Society of North America, states: “We are living in a society composed of Muslims and non-Muslims together. They are our neighbors, our co-workers, and our classmates. We should work with them, especially in humanitarian projects. Islam teaches us to care for all people regardless of their faith or their opinions.
As human beings, their life is to be protected. Their property is to be protected. Their honor is to be protected. And the freedom of religion is there (for them), and their families must be protected. So these are the basic values the Shari`ah emphasizes. These values are universal for all human beings. We should show our friendship and goodness to them. Allah says in the Qur’an:
“Allah does not forbid you from those who do not fight you in the matters of your religion and those who did not expel you from your homes, that you show them courtesy and kindness and act justly with them because Allah loves those who are Just.” (Al-Mumtahanah: 8)
So those who respect your religion and human rights, then you should deal with them in kindness and courtesy and have good dealings with them especially in matters of human welfare and well-being.
Allah says, “Co-operate with each other in matters of righteousness and piety and do not co-operate in matters of aggression and sin.” (Al-Ma’idah: 2)
When you are with them (non-Muslims) it does not mean you forget your religion. So when it is time to pray you must pray. When eating with them be sure to observe the Halal. If there is a mixed gathering of males and females, remember to observe the Islamic manners of how to act in such instances. Remember that Islam commands good behavior and good dealings with all people.”
Explaining some issues of working with non-Muslims, Dr. Siddiqi adds: “We should work with them and live with them honorably. Look at Allah’s Messenger (peace and blessings be upon him). His uncle, Abu Talib was not a Muslim but still he respected his uncle and cared for him and vice versa. His uncle was good to him and would help him.”
In brief, you should think of and treat non-Muslims as potential Muslims. Show them the respect and kindness they deserve as human beings, and perhaps your good behavior will lead them to Islam.