حَدَّثَنَا آدَمُ، قَالَ‏:‏ حَدَّثَنَا شُعْبَةُ، قَالَ‏:‏ حَدَّثَنَا حُصَيْنٌ قَالَ‏:‏ سَمِعْتُ هِلاَلَ بْنَ يَسَافٍ يَقُولُ‏:‏ كُنَّا نَبِيعُ الْبَزَّ فِي دَارِ سُوَيْدِ بْنِ مُقَرِّنٍ، فَخَرَجَتْ جَارِيَةٌ فَقَالَتْ لِرَجُلٍ شَيْئًا، فَلَطَمَهَا ذَلِكَ الرَّجُلُ، فَقَالَ لَهُ سُوَيْدُ بْنُ مُقَرِّنٍ‏:‏ أَلَطَمْتَ وَجْهَهَا‏؟‏ لَقَدْ رَأَيْتُنِي سَابِعَ سَبْعَةٍ وَمَا لَنَا إِلاَّ خَادِمٌ، فَلَطَمَهَا بَعْضُنَا، فَأَمَرَهُ النَّبِيُّ صلى الله عليه وسلم أَنْ يُعْتِقُهَا‏.‏

Abu 'Umar Zadhan said, "We were with Ibn 'Umar when he summoned a slave of his whom he had beaten and he uncovered his back. 'Does it hurt?' he asked. 'No,' he replied. Then he set him free. He picked up a stick from the ground and then said, 'I do not have a reward (for him) worth as much as this stick.' I asked, 'Abu 'Abdu'r-Rahman, why do you say this?' He replied, 'I heard the Prophet, may Allah bless him and grant him peace, say, "The expiation of someone who beats a slave more than he deserves or slaps his face is that he must set him free."'"