Hadithcore
Hadith #515880

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."

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 ‏.‏

References1 variant
Arabic/English book reference
Book 43, Hadith 8