Q 10: What is the ruling on
using English words to return the greetings of non-Arabs such as: "Good morning" and "Good afternoon"?
What is the ruling on returning the greeting to those who greet me in this manner? Should I return the greeting in the same language, or should a Muslim only use the Islamic greeting which Allah has honored us with?
If they are Muslims, you should return the greeting in their language and also initiate it using their greeting if they do not speak Arabic. If they speak Arabic, it is best for you both to initiate the Arabic greeting and return it as well.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.