That seems to, again, say that Erdogan believes high interest rates are forbidden under Islamic law; but that is different than saying that the Quran says high interest rates cause inflation (as the parent claimed Erdogan believed).

To be clear, I don't hold the position that Erdogan doesn't believe high interest rates cause inflation -- I don't know what he believes. I am just trying to find a source that backs up the parents' claim, if there is one.