Sunan Ibn Majah, Volume 3, Book 21, Hadith 2692 (DarusSalam) ⓘ
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 but he enjoined forgiveness.”
حَدَّثَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، أَنْبَأَنَا حَبَّانُ بْنُ هِلاَلٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ بَكْرٍ الْمُزَنِيُّ، عَنْ عَطَاءِ بْنِ أَبِي مَيْمُونَةَ، قَالَ لاَ أَعْلَمُهُ إِلاَّ عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ مَا رُفِعَ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم شَىْءٌ فِيهِ الْقِصَاصُ إِلاَّ أَمَرَ فِيهِ بِالْعَفْوِ .
also referenced under: Hadith 2692 (Reference) & Book 21, Hadith 2795 (In-Book)