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bayhaqi:17111Abū ʿAbdullāh al-Ḥāfiẓ Ijāzah > Abū al-Walīd > al-Ḥasan b. Sufyān > Abū Bakr b. Abū Shaybah > ʿAbbād b. al-ʿAwwām > Ashʿath from his father

[Machine] I witnessed Abu Barzah striking one of his servants, causing her to bleed.  

البيهقي:١٧١١١وَأَنْبَأَنِي أَبُو عَبْدِ اللهِ الْحَافِظُ إِجَازَةً أنبأ أَبُو الْوَلِيدِ ثنا الْحَسَنُ بْنُ سُفْيَانَ ثنا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ثنا عَبَّادُ بْنُ الْعَوَّامِ عَنْ أَشْعَثَ عَنْ أَبِيهِ قَالَ

شَهِدْتُ أَبَا بَرْزَةَ ضَرَبَ أَمَةً لَهُ فَجَرَتْ