A man asked Al-Bara' and I was listening, "Did `Ali take part in (the battle of) Badr?" Al-Bara' said, "(Yes). he even met (his enemies) in a duel and was clad in two armors (one over the other).
Sahih al-Bukhari Book 64, Hadith 23
← Previous Hadith I heard Abu Dhar swearing that the following Holy verse:-- "These two opponents (believers and disbelievers) disputing with each other about their Lord," (22.19) was revealed concerning those men who fought on the day of Badr, namely, Hamza, `Ali, Ubaida bin Al-Harith, `Utba and Shaiba----the two sons of Rabi`a-- and Al-Walid bin `Utba.

Sahih al-Bukhari Book 64, Hadith 22 Next Hadith → "I had an agreement with Umaiya bin Khalaf (that he would look after my relatives and property in Mecca, and I would look after his relatives and property in Medina)." `Abdur-Rahman then mentioned the killing of Umaiya and his son on the day of Badr, and Bilal said, "Woe to me if Umaiya remains safe (i.e. alive) . "

Sahih al-Bukhari Book 64, Hadith 24