Surah An-Nisa, Verse 105

إِنَّآ أَنزَلۡنَآ إِلَيۡكَ ٱلۡكِتَٰبَ بِٱلۡحَقِّ لِتَحۡكُمَ بَيۡنَ ٱلنَّاسِ بِمَآ أَرَىٰكَ ٱللَّهُۚ وَلَا تَكُن لِّلۡخَآئِنِينَ خَصِيمٗا١٠٥

innā anzalnā ilayka l-kitāba bil-ḥaqi litaḥkuma bayna l-nāsi bimā arāka l-lahu walā takun lil'khāinīna khaṣīman

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.