Sahih Bukhari | Volume 6 | Hadith Number 267

Narrated by 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.