Question: If brothers are mixed (having multiple national backgrounds) is it recommended to say where they are from according to their father’s and mother’s country of origin or do they just follow after the father’s origin?

Answer:

Allah The Most High says:

ادْعُوهُمْ لِآبَائِهِمْ هُوَ أَقْسَطُ عند الله

“Call them by [the names of] their fathers; it is more just in the sight of Allah” (Surah al-Ahzaab 33:5)

He should follow his father’s origin and at times he can mention both if needed inshaa Allah

~ Abu Fajr AbdulFattaah bin Uthman