Hadith #4590 (Sunan Abi Dawud)
Book: Types of Blood-Wit (Kitab Al-Diyat)
Narrator(s): Abu Hurairah, al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم, Muhammad bin Sa'id bin Yazid محمد بن سعيد بن يزيد بن إبراهيم, Sa'id ibn al-Musayyib سعيد بن المسيب بن حزن أبو محمد القرشي, Sufyan bin Hussain bin al-Hasan سفيان بن حسين السلمي, Uthman bin Muhammad
Grade: Sahih

A servant of some poor people cut off the ear of the servant of some rich people. His people came to the Prophet (ﷺ) and said: Messenger of Allah! we are poor people. So he imposed no compensation on them.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4590/