Hadith 515880
Chapter 43: Blood-Money - كتاب العقول
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، أَنَّهُ كَانَ يَقُولُ لَيْسَ عَلَى الْعَاقِلَةِ عَقْلٌ فِي قَتْلِ الْعَمْدِ إِنَّمَا عَلَيْهِمْ عَقْلُ قَتْلِ الْخَطَإِ .
Yahya related to me from Malik from Hisham ibn Urwa that his father said, "The tribe is not obliged to pay blood-money for intentional murder. They pay blood-money for accidental killing."
Reference Muwatta Malik 515880
USC-MSA web (English) reference : Book 43, Hadith 8