Surah Al-Maidah, verse 42

سَمَّـٰعُونَ لِلْكَذِبِ أَكَّـٰلُونَ لِلسُّحْتِ ۚ فَإِن جَآءُوكَ فَٱحْكُم بَيْنَهُمْ أَوْ أَعْرِضْ عَنْهُمْ ۖ وَإِن تُعْرِضْ عَنْهُمْ فَلَن يَضُرُّوكَ شَيْـًٔا ۖ وَإِنْ حَكَمْتَ فَٱحْكُم بَيْنَهُم بِٱلْقِسْطِ ۚ إِنَّ ٱللَّهَ يُحِبُّ ٱلْمُقْسِطِينَ ﴿٤٢﴾

5:42 They eagerly listen to lies and consume unlawful gains. If they come to you [O Prophet], either judge between them or turn away from them. If you turn away from them, they cannot harm you in the least. But if you judge, then judge between them with justice, for Allah loves those who are just