Abu Dharr (RAA) quoted the Prophet (ﷺ) saying among what he narrated from Allah, the Most High that He has said, “O MY slaves, I have made oppression unlawful for myself and I have made it unlawful among you, so do not oppress one another.” Related by Muslim.

وَعَنْ أَبِي ذَرٍّ ‏- رضى الله عنه ‏- عَنْ اَلنَّبِيِّ ‏-صَلَّى اَللَّهُ عَلَيْهِ وَسَلَّمَ‏-‏- فِيمَا يَرْوِي [1]‏ عَنْ رَبِّهِ‏- قَالَ: { يَا عِبَادِي! إِنِّي حَرَّمْتُ اَلظُّلْمَ عَلَى نَفْسِي, وَجَعَلْتُهُ بَيْنَكُمْ مُحَرَّمًا, فَلَا تَظَّالَمُوا } أَخْرَجَهُ مُسْلِمٌ.‏ [2]‏ .‏