[Machine] According to Muhammad ibn Ishaq, the name of the person who witnessed the Battle of Badr from the Ansar, then from the Khazraj, then from the Banu Mazin ibn al-Najjar tribe, is Qays ibn Abi Sa'sa'ah. The name of Abi Sa'sa'ah's father is Amr ibn Zaid ibn Awf ibn Mabdul ibn Amr ibn Ghanm ibn Mazin ibn al-Najjar.
عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ فِي تَسْمِيَةِ مَنْ شَهِدَ بَدْرًا مِنَ الْأَنْصَارِ ثُمَّ مِنَ الْخَزْرَجِ ثُمَّ مِن بَنِي مَازِنِ بْنِ النَّجَّارِ قَيْسُ بْنُ أَبِي صَعْصَعَةَ وَاسْمُ أَبِي صَعْصَعَةَ عَمْرُو بْنُ زَيْدِ بْنِ عَوْفِ بْنِ مَبْذُولِ بْنِ عَمْرِو بْنِ غَنْمِ بْنِ مَازِنِ بْنِ النَّجَّارِ