He can recite some Arabic prayers (call to prayer, for instance). I don’t know if he can speak either language, however. Can he do anything without a teleprompter?
The Quran has 6666 verses in it (surahs). The curriculum in a madras is engineered around the complete memorization of all of them.
The Bible used to be used in English lit classes in the US for a long time. Two birds, one stone, as it were.
I believe that madras’ use the Quran as a primer for learning Arabic or Farsi.
He can probably speak Arabic. He certainly could speak a certain amount of it as a schoolchild in Indonesia because in the Moslem school he attended it was required for him to be taught Arabic. His pronunciation of the memorization that he has enunciated is such that, again, he probably speaks Arabic.