Qur'an 4:105 · An-Nisaa

إِنَّآ أَنزَلْنَآ إِلَيْكَ ٱلْكِتَٰبَ بِٱلْحَقِّ لِتَحْكُمَ بَيْنَ ٱلنَّاسِ بِمَآ أَرَىٰكَ ٱللَّهُ ۚ وَلَا تَكُن لِّلْخَآئِنِينَ خَصِيمًۭا

(105) Indeed, We have revealed to you, [O Muḥammad], the Book in truth so you may judge between the people by that which Allāh has shown you. And do not be for the deceitful an advocate.