Narrated Ali ibn AbuTalib:

(At the battle of Badr) Utbah ibn Rabi'ah came forward followed by his son and his brother and cried out: Who will be engaged in single combat? Some young men of the Helpers responded to his call. He asked: Who are you? They told him. He said: We do not want you; we, in fact, want only our cousins. The Prophet (ﷺ) said: Get up Hamzah get up Ali; get up Ubaydah ibn al-Harith. Hamzah went forward to Utbah, I went forward to Shaybah; and after two blows had been exchanged between Ubaydah and al-Walid, they wounded one another severely; so we turned against al-Walid and killed him, and we carried Ubaydah away.

حَدَّثَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا عُثْمَانُ بْنُ عُمَرَ، أَخْبَرَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنْ حَارِثَةَ بْنِ مُضَرِّبٍ، عَنْ عَلِيٍّ، قَالَ تَقَدَّمَ - يَعْنِي عُتْبَةَ بْنَ رَبِيعَةَ - وَتَبِعَهُ ابْنُهُ وَأَخُوهُ فَنَادَى مَنْ يُبَارِزُ فَانْتَدَبَ لَهُ شَبَابٌ مِنَ الأَنْصَارِ فَقَالَ مَنْ أَنْتُمْ فَأَخْبَرُوهُ فَقَالَ لاَ حَاجَةَ لَنَا فِيكُمْ إِنَّمَا أَرَدْنَا بَنِي عَمِّنَا ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏

‏ قُمْ يَا حَمْزَةُ قُمْ يَا عَلِيُّ قُمْ يَا عُبَيْدَةُ بْنَ الْحَارِثِ ‏

‏ ‏.‏ فَأَقْبَلَ حَمْزَةُ إِلَى عُتْبَةَ وَأَقْبَلْتُ إِلَى شَيْبَةَ وَاخْتُلِفَ بَيْنَ عُبَيْدَةَ وَالْوَلِيدِ ضَرْبَتَانِ فَأَثْخَنَ كُلُّ وَاحِدٍ مِنْهُمَا صَاحِبَهُ ثُمَّ مِلْنَا عَلَى الْوَلِيدِ فَقَتَلْنَاهُ وَاحْتَمَلْنَا عُبَيْدَةَ ‏.‏