Al-Kahf - 18:54

وَلَقَدْ صَرَّفْنَا فِي هَذَا الْقُرْآنِ لِلنَّاسِ مِن كُلِّ مَثَلٍ وَكَانَ الْإِنسَانُ أَكْثَرَ شَيْءٍ جَدَلًا
[18:54]
And certainly We have explained in this Quran every kind of example, and man is most of all given to contention.
We have explained in detail in this Qur'an, for the benefit of mankind, every kind of similitude: but man is, in most things, contentious.
And verily We have displayed for mankind in this Qur'an all manner of similitudes, but man is more than anything contentious.