Musannaf Ibn Abi Shayba 18:1282

Abu Bakr narrated to us, he said: Waki’ narrated to us, from al-Hasan ibn Salih, from Mukhariq, from Tariq ibn Shihab, that Khalid ibn al-Walid exacted retaliation (qisas) from a man from Murad for a slap with which he had slapped his brother's son.