Quran 2:204 from Surah Al-Baqara on Divine Marvels.
وَمِنَ ٱلنَّاسِ مَن يُعۡجِبُكَ قَوۡلُهُۥ فِي ٱلۡحَيَوٰةِ ٱلدُّنۡيَا وَيُشۡهِدُ ٱللَّهَ عَلَىٰ مَا فِي قَلۡبِهِۦ وَهُوَ أَلَدُّ ٱلۡخِصَامِ
English translation: And of the people (is the one) who pleases you (with) his speech in the life (of) the world and he calls to witness Allah on what (is) in his heart and he (is) the most quarrelsome (of) opponents
Transliteration: wamina al-nasi man yu'jibuka qawluhu fi al-hayati al-dun'ya wayush'hidu al-laha ala ma fi qalbihi wahuwa aladdu al-khisami