تُحَآجُّونَ

Appears 2 times in the Quran. (Root: حجج)
  1. O followers of the Book! why do you dispute about Ibrahim, when the Taurat and the Injeel were not revealed till after him; do you not then understand?

  2. Behold! you are they who disputed about that of which you had knowledge; why then do you dispute about that of which you have no knowledge? And Allah knows while you do not know.