Narrated Qais bin Ubad:
Abu Dharr used to take an oath confirming that the Verse: 'These two opponents (believers, and disbelievers) dispute with each other about their Lord.' (22.19) was Revealed in connection with Hamza and his two companions and `Utbah and his two companions on the day when they ease out of the battle of Badr. (DE)
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 267 (DE)
Arabic reference (DE): Book 65, Hadith 4743 (DE)