In the power dynamics between the servant and his master

Saʿīd b. ʿĀmir > Shuʿbah > Qatādah > al-Ḥasan > Samurah b. Jundub

The Messenger of Allah ﷺ said, "Whoever kills his slave, we will kill him. And whoever mutilates him, we will mutilate him." Then Al-Hasan forgot this Hadith and used to say, "A free man should not be killed for a slave." – Weak Chain

أَخْبَرَنَا سَعِيدُ بْنُ عَامِرٍ عَنْ شُعْبَةَ عَنْ قَتَادَةَ عَنْ الْحَسَنِ عَنْ سَمُرَةَ بْنِ جُنْدُبٍ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «مَنْ قَتَلَ عَبْدَهُ قَتَلْنَاهُ وَمَنْ جَدَعَهُ جَدَعْنَاهُ» قَالَ ثُمَّ نَسِيَ الْحَسَنُ هَذَا الْحَدِيثَ وَكَانَ يَقُولُ لَا يُقْتَلُ حُرٌّ بِعَبْدٍ – إسناده ضعيف