17. Does Islam allow Muslims to wish
non-Muslims on their festivals?

Absolutely! Opportunities for engaging in interaction should never be lost. Greeting others is a part of social ethics, and not a part of belief system. One must strive to live peacefully and humbly in society. A society is the sub-unit of a nation, which is diverse yet interconnected. When the members of a society acknowledge their diversity despite having different beliefs, they nurture a healthy atmosphere of open interaction, mutual learning and peaceful coexistence.