However, there's no way to prove that some of the male line in that family were NOT arabs. The arabs did inter-marry...or should I say, have children with blacks.
There's also the fact that the female line doesn't count with islamic blacks, and to be able to call yourself arab held certain advantages.
The other argument, that arabs are not black falls down with the fact that the arabs in that region were Omani.
Thanks for the clarification. I find it very difficult to believe that bam is arab. Too much points the other way. islamic, yes.
If you are accepting that arabic speaking people are arab, then yes, some Omanis are black having migrated centuries ago. This is a construct of the Arab League which claims that anyone living in an arabic speaking country is arab so they can claim control as an arab state to expand their influence.
Genetically, black people are not arabs.