Medieval annotations read Qur’anic verses on pagans as Islamic denials of the Trinity

Evidence

138 in the same sirah, he said, ‘he calls Christians partakers or participators because they part God into three Persons’. Both these verses in this siirah refer really to pagans only, but the annotations effectively drew attention to the Islamic view of the Christian belief. The point must, indeed, have been clear to every careful reader of Ketton’s text. — Norman Daniel, Islam and the West, 973