Sunan Ibn Majah, Hadith 2318 ⓘ
It was narrated from Abu Hurairah that the Messenger of Allah said: “I am only human, and some of you may be more eloquent in presenting your case than others. If I pass a judgement in his favor that detracts from his brother's rights, I am giving him a piece of fire.”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا مُحَمَّدُ بْنُ بِشْرٍ، حَدَّثَنَا مُحَمَّدُ بْنُ عَمْرٍو، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّمَا أَنَا بَشَرٌ وَلَعَلَّ بَعْضَكُمْ أَنْ يَكُونَ أَلْحَنَ بِحُجَّتِهِ مِنْ بَعْضٍ فَمَنْ قَطَعْتُ لَهُ مِنْ حَقِّ أَخِيهِ قِطْعَةً فَإِنَّمَا أَقْطَعُ لَهُ قِطْعَةً مِنَ النَّارِ " .
also referenced under: Book 13, Hadith 11 (In-Book) & Volume 3, Book 13, Hadith 2318 (DarusSalam)