Arabic (Original)
حَدَّثَنَا عَبْدُ الرَّحْمَنِ عَنْ سُفْيَانَ عَنْ فِرَاسٍ أَخْبَرَنِي أَبُو صَالِحٍ عَنْ زَاذَانَ قَالَ كُنْتُ عِنْدَ ابْنِ عُمَرَ فَدَعَا غُلَامًا لَهُ فَأَعْتَقَهُ ثُمَّ قَالَ مَا لِي فِيهِ مِنْ أَجْرٍ مَا يَسْوَى هَذَا أَوْ يَزِنُ هَذَا سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ مَنْ ضَرَبَ عَبْدًا لَهُ حَدًّا لَمْ يَأْتِهِ أَوْ ظَلَمَهُ أَوْ لَطَمَهُ شَكَّ عَبْدُ الرَّحْمَنِ فَإِنَّ كَفَّارَتَهُ أَنْ يُعْتِقَهُ.
English Translation
'Abd al-Rahman narrated to us, from Sufyan, from Firas - Abu Salih informed me - from Zadhan, who said: I was with Ibn 'Umar, and he called a servant boy of his and freed him. Then he said: 'I have no reward in this - not even the weight of this,' or 'equal to this.' I heard the Messenger of Allah, peace and blessings be upon him, say: 'Whoever strikes his slave for an offense he did not commit, or wrongs him, or slaps him' - 'Abd al-Rahman was unsure of the wording - 'then his atonement is to free him.'