[Machine] Umar ibn al-Khattab and Uthman ibn Affan, along with the caliphs that followed, never have I seen anyone beat a slave in a manner more than forty lashes.  

عُمَرَ بْنَ الْخَطَّابِ وَعُثْمَانَ بْنَ عَفَّانَ ؓ وَالْخُلَفَاءَ هَلُمَّ جَرَّا مَا رَأَيْتُ أَحَدًا جَلَدَ عَبْدًا فِي فِرْيَةٍ أَكْثَرَ مِنْ أَرْبَعِينَ  

[Machine] I reached Abu Bakr, Umar, Uthman, and those who came after them from the caliphs, and I did not see them striking the slave except forty times. Abu Bakr al-Ardistani informed us, Abu Nasr al-Iraqi narrated to us, Sufyan al-Jawhari narrated to us, Ali ibn al-Hasan narrated to us, Abdullah ibn al-Walid narrated to us, Sufyan mentioned it, and from Sufyan, Ja'far narrated from his father that Ali used to not strike the slave except forty times when he threw free slaves.  

أَدْرَكْتُ أَبَا بَكْرٍ وَعُمَرَ وَعُثْمَانَ ؓ وَمَنْ بَعْدَهُمْ مِنَ الْخُلَفَاءِ فَلَمْ أَرَهُمْ يَضْرِبُونَ الْمَمْلُوكَ فِي الْقَذْفِ إِلَّا أَرْبَعِينَ أَخْبَرَنَاهُ أَبُو بَكْرٍ الْأَرْدَسْتَانِيُّ أنبأ أَبُو نَصْرٍ الْعِرَاقِيُّ ثنا سُفْيَانُ الْجَوْهَرِيُّ ثنا عَلِيُّ بْنُ الْحَسَنِ ثنا عَبْدُ اللهِ بْنُ الْوَلِيدِ ثنا سُفْيَانُ فَذَكَرَهُ وَعَنْ سُفْيَانَ ثنا جَعْفَرٌ عَنْ أَبِيهِ أَنَّ عَلِيًّا ؓ كَانَ لَا يَضْرِبُ الْمَمْلُوكَ إِذَا قَذَفَ حُرًّا إِلَّا أَرْبَعِينَ