'Ali (RAA) narrated that They (the Muslims and the polytheists) engaged in duel combat on the Day of Badr. Related by Al-Bukhari and Abu Dawud reported it as part of a long hadith. (JA)
English reference (JA): Book 11, Hadith 1315 (JA)
Arabic reference (JA): Book 11, Hadith 1288 (JA)