2:204
وَمِنَ ٱلنَّاسِ مَن يُعْجِبُكَ قَوْلُهُۥ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا وَيُشْهِدُ ٱللَّهَ عَلَىٰ مَا فِى قَلْبِهِۦ وَهُوَ أَلَدُّ ٱلْخِصَامِ
wamina l-nāsi man yuʿ'jibuka qawluhu fī l-ḥayati l-dun'yā wayush'hidu l-laha ʿalā mā fī qalbihi wahuwa aladdu l-khiṣāmi
There is [a kind of] man whose views on the life of this world may please you [Prophet], he even calls on God to witness what is in his heart, yet he is the bitterest of opponents.
And of mankind there is he whose speech may please you (O Muhammad صلى الله عليه وسلم), in this worldly life, and he calls Allâh to witness as to that which is in his heart, yet he is the most quarrelsome of the opponents.