First, they need to make “a thorough investigation and inquiry ” to establish if wrong has been done.
وَإِذَا ثَبَتَ ذٰلِكَ ،‏ يُعَالِجُونَ ٱلْقَضِيَّةَ بِحَسَبِ إِرْشَادَاتِ ٱلْأَسْفَارِ ٱلْمُقَدَّسَةِ .‏