Ibn Shihab al-Zuhri (may Allah have mercy on him), naming those of the Ansar who were present at Badr, of Banu al-Aws, then of Banu Tha'labah bin Amr bin Awf, said: al-Harith bin al-Nu'man (was present).
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3380