In the Quran

۞إِنَّ ٱللَّهَ يَأۡمُرُكُمۡ أَن تُؤَدُّواْ ٱلۡأَمَٰنَٰتِ إِلَىٰٓ أَهۡلِهَا وَإِذَا حَكَمۡتُم بَيۡنَ ٱلنَّاسِ أَن تَحۡكُمُواْ بِٱلۡعَدۡلِۚ إِنَّ ٱللَّهَ نِعِمَّا يَعِظُكُم بِهِۦٓۗ إِنَّ ٱللَّهَ كَانَ سَمِيعَۢا بَصِيرٗا

"Indeed, Allah commands you to render trusts to whom they are due and when you judge between people to judge with justice. Excellent is that which Allah instructs you. Indeed, Allah is ever Hearing and Seeing"