Sunan an-Nasa'i, Hadith 4751 ⓘ
It was narrated from 'Imran bin Hussain that: a slave belonging to some poor people cut off the ear of a slave belonging to some rich people. They came to the Prophet but he did not give them anything.
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا مُعَاذُ بْنُ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، عَنْ أَبِي نَضْرَةَ، عَنْ عِمْرَانَ بْنِ حُصَيْنٍ، أَنَّ غُلاَمًا، لأُنَاسٍ فُقَرَاءَ قَطَعَ أُذُنَ غُلاَمٍ لأُنَاسٍ أَغْنِيَاءَ فَأَتَوُا النَّبِيَّ صلى الله عليه وسلم فَلَمْ يَجْعَلْ لَهُمْ شَيْئًا .
also referenced under: Book 45, Hadith 46 (In-Book) & Volume 5, Book 45, Hadith 4755 (DarusSalam)