Surah Al-Baqarah (The Cow), Verse 204

وَمِنَ النَّاسِ مَنْ یُّعْجِبُكَ قَوْلُهٗ فِی الْحَیٰوةِ الدُّنْیَا وَیُشْهِدُ اللّٰهَ عَلٰی مَا فِیْ قَلْبِهٖ وَهُوَ اَلَدُّ الْخِصَامِ ۟

Wa minan naasi mai yu'jibuka qawluhoo fil hayaatid dunyaa wa yushhidul laaha 'alaa maa fee qalbihee wa huwa aladdulkhisaam

“There is the type of man whose speech about this world's life May dazzle thee, and he calls Allah to witness about what is in his heart; yet is he the most contentious of enemies.”

Quran 2:204 (Yusuf Ali Translation)