Abu Dharr reported: The Messenger of Allah, peace and blessings be upon him, said, “I instruct you to fear Allah in your private and public affairs. If you do a bad deed, then do a good deed. Do not ask anyone for anything, even if you drop your whip. Do not violate what is entrusted, and do not take a position as judge between two people.”
Source: Musnad Aḥmad 21573
Grade: Hasan (fair) according to Al-Albani
عَنْ أَبِي ذَرٍّ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ أُوصِيكَ بِتَقْوَى اللَّهِ فِي سِرِّ أَمْرِكَ وَعَلَانِيَتِهِ وَإِذَا أَسَأْتَ فَأَحْسِنْ وَلَا تَسْأَلَنَّ أَحَدًا شَيْئًا وَإِنْ سَقَطَ سَوْطُكَ وَلَا تَقْبِضْ أَمَانَةً وَلَا تَقْضِ بَيْنَ اثْنَيْنِ
21573 مسند أحمد
2544 المحدث الألباني خلاصة حكم المحدث حسن في صحيح الجامع