Sunan Ibn Majah
2692
Sahih+2

It was narrated that 'Ata bin Abu Maimunah said:“I only know it from Anas bin Malik who said: 'No case involving retaliation was referred to the Messenger of Allah (ﷺ) but he enjoined forgiveness.”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi