I did not study Arabic... but I know how to speak and write Arabic better than eloquent Arabs.

I did not study Arabic. When I was a child, I had a book of prayers by His Holiness the Bab in the handwriting of the Blessed Beauty. I really yearned to read it. At night, I would wake up and gaze with longing and intense desire until I saw that I understood Arabic well. Old friends know well that I did not study, but I know how to speak and write Arabic better than eloquent Arabs.”

(Abdu’l-Baha, Mahmud’s Diary, Europe, 308; quoted in Muhammad Ali Faizi, Hayat Hazrat Abdu’l-Baha, 4)

https://web.archive.org/web/20220128084658/http://www.kashkul.org/2018/06/16/abdul-bahas-arabic/