Quran 2:204 Al-Baqarah, ayah 204 of 286

وَمِنَ ٱلنَّاسِ مَن يُعْجِبُكَ قَوْلُهُۥ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا وَيُشْهِدُ ٱللَّهَ عَلَىٰ مَا فِى قَلْبِهِۦ وَهُوَ أَلَدُّ ٱلْخِصَامِ ۝٢٠٤

2:204 And of mankind there is he whoso conversation on the life of this world pleaseth thee (Muhammad), and he calleth Allah to witness as to that which is in his heart; yet he is the most rigid of opponents.