Is this from a Hadith?
Re: Anyone who speaks fluent Arabic is an Arab
Islam does not promote or accept any kind of nationalism or tribalism so i am not so sure about this hadith being genuine!
Re: Anyone who speaks fluent Arabic is an Arab
It doesn't accept racism/pride/partisanship based on these but it does accept that nations, languages and tribes do exist as a sign from Allah, He made us into these.