Mouth
The triliteral root fā wāw hā (ف و ه) occurs in the Quran 13 times.
(3:118) O you who acknowledge do not take protection from any besides yourselves; they will only disrupt you greatly. They wish that you suffer; the hatred appears from their mouths (Arab. أَفْوَاهِهِمْ, afwāhihim) and what their chests hide is greater! We have made clear for you the signs if you reason.
(9:30) The Jews said, "Ezra is God's son," and the Nazarenes said, "The Messiah is God's son." Such is their utterances with their mouths (Arab. بِأَفْوَاهِهِمْ, bi-afwāhihim); they imitate the sayings of those who rejected before them. God's curse be on them. How deviated are they!