(7) باب مَنْ قَتَلَ عَبْدَهُ أَوْ مَثَّلَ بِهِ أَيُقَادُ مِنْهُ
It was narrated from Hisham, from Qatadah, from Al-Hasan, who said:
"A free man should not be subjected to retaliation in return for a slave." (ID)
Reference (ID): Sunan Abi Dawud 4518 (ID)
In-book reference (ID): Book 41, Hadith 25 (ID)
English translation (ID): Book 40, Hadith 4503 (ID)