[Machine] About Hisham ibn Al-Kalbi's narration that the Prophet ﷺ said, "The first blood I shed in Islam is the blood of Rabi'ah ibn Al-Harith, who was being fostered by Bani Layth, and Hudhayl killed him." Hisham said, "Rabi'ah was not killed, as he lived after the Prophet's ﷺ time until the caliphate of Umar. The one that Hudhayl killed was someone else." Al-Dhahabi excluded this narration from his summarization due to its weakness.  

عَنْ هِشَامِ بْنِ الْكَلْبِيِّ فِي قَوْلِ النَّبِيِّ ﷺ «وَإِنَّ أَوَّلَ دَمٍ أَضَعُهُ دَمَ رَبِيعَةَ بْنِ الْحَارِثِ كَانَ مُسْتَرْضَعًا فِي بَنِي لَيْثٍ فَقَتَلَتْهُ هُذَيْلٌ» قَالَ هِشَامٌ «لَمْ يُقْتَلْ رَبِيعَةُ فَإِنَّهُ عَاشَ بَعْدَ النَّبِيِّ ﷺ إِلَى خِلَافَةِ عُمَرَ وَالَّذِي قَتَلَتْهُ هُذَيْلٌ غَيْرُهُ» حذفه الذهبي من التلخيص لضعفه