وَمِنَ النّاسِ مَن يُعجِبُكَ قَولُهُ فِي الحَياةِ الدُّنيا وَيُشهِدُ اللَّهَ عَلىٰ ما في قَلبِهِ وَهُوَ أَلَدُّ الخِصامِ

And of the people is he whose speech pleases you in worldly life, and he calls Allah to witness as to what is in his heart, yet he is the fiercest of opponents.