Sahih al-Bukhari 4744
صحيح البخاري#4744SahihNarrated Qais bin Ubad:`Ali said, "I will be the first to kneel before the Beneficent on the Day of Resurrection because of the dispute." Qais said; This Verse: 'These two opponents (believers and disbelievers dispute with each other about their Lord,' (22.19) was revealed in connection with those who came out for the Battle of Badr, i.e. `Ali, Hamza, 'Ubaida, Shaiba bin Rabi`a, `Utba bin Rabi`a and Al-Walid bin `Utba
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 65:266