Quran 5:42 Al-Ma'idah, ayah 42 of 120

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 Listeners for the sake of falsehood! Greedy for illicit gain! If then they have recourse unto thee (Muhammad) judge between them or disclaim jurisdiction. If thou disclaimest jurisdiction, then they cannot harm thee at all. But if thou judgest, judge between them with equity. Lo! Allah loveth the equitable.