Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
حَدَّثَنَا حَجَّاجُ بْنُ مِنْهَالٍ، حَدَّثَنَا مُعْتَمِرُ بْنُ سُلَيْمَانَ، قَالَ سَمِعْتُ أَبِي قَالَ، حَدَّثَنَا أَبُو مِجْلَزٍ، عَنْ قَيْسِ بْنِ عُبَادٍ، عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ ـ رضى الله عنه ـ قَالَ أَنَا أَوَّلُ، مَنْ يَجْثُو بَيْنَ يَدَىِ الرَّحْمَنِ لِلْخُصُومَةِ يَوْمَ الْقِيَامَةِ. قَالَ قَيْسٌ وَفِيهِمْ نَزَلَتْ {هَذَانِ خَصْمَانِ اخْتَصَمُوا فِي رَبِّهِمْ} قَالَ هُمُ الَّذِينَ بَارَزُوا يَوْمَ بَدْرٍ عَلِيٌّ وَحَمْزَةُ وَعُبَيْدَةُ وَشَيْبَةُ بْنُ رَبِيعَةَ وَعُتْبَةُ بْنُ رَبِيعَةَ وَالْوَلِيدُ بْنُ عُتْبَةَ.Narrated 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
From Sahih al-Bukhari, whose reports the scholars accept as authentic.