Abdul Rahman bin Awf reported, "While I was standing in the ranks on the day of Badr, I looked to my right and to my left, and there I was between two young men of the Ansar, both of tender age. I wished I were positioned between two stronger men. One of them nudged me and asked, 'Uncle, do you know Abu Jahl?'I replied, 'Yes. What do you want with him, my nephew?'He said, 'I have been told that he insults the Messenger of Allah ﷺ. By the One in whose hand my soul rests, if I see him, my body will not part from his until the one of us whose time has come dies first.'I was amazed at this. Then the other one nudged me and said the same thing.It was not long before I caught sight of Abu Jahl moving about among the people. I said, 'Do you not see this man? He is the one you were asking about.'The two of them rushed at him and struck him with their swords until they killed him. Then they returned to the Messenger of Allah ﷺ and informed him.He asked, 'Which of you killed him?'Each one said, 'I killed him.'He asked, 'Have you wiped your swords?'They said, 'No.'He examined the two swords and said, 'Both of you killed him.' He awarded his spoils to Muaz bin Amr bin Jamuh."The two men were Muaz bin Amr bin Jamuh and Muaz bin Afra.
بينا أنا واقف في الصف يوم بدر نظرت عن يميني وشمالي فإذا أنا بين غلامين من الأنصار حديثة أسنأنهما تمنيت لو كنت بين أضلع منهما، فغمزني أحدهما، فقال: يا عم هل تعرف أبا جهل؟ قال: قلت: نعم، وما حاجتك إليه يا ابن أخي؟ قال: أخبرت أنه يسب رسول الله ﷺ، والذي نفسي بيده لئن رأيته لا يفارق سوادي سواده حتى يموت الأعجل منا، قال: فتعجبت لذلك فغمزني الآخر، فقال: مثلها قال: فلم أنشب أن نظرت إلى أبي جهل يجول في الناس، فقلت: ألا تريان هذا صاحبكما الذي تسألان عنه، قال: فابتدراه فضرباه بسيفيهما حتى قتلاه، ثم انصرفا إلى رسول الله ﷺ فأخبراه فقال: أيكما قتله؟ فقال كل واحد منهما: أنا قتلت. فقال: هل مسحتما سيفيكما؟ قالا: لا. فنظر في السيفين فقال: كلاكما قتله، وقضى بسلبه لمعاذ بن عمرو بن الجموح، والرجلان: معاذ بن عمرو بن الجموح، ومعاذ بن عفراء.
Bukhari narrated it in the chapter on the obligation of khumus (3141), and Muslim in jihad and expeditions (1752), both through the route of Yusuf bin Majishun, from Salih bin Ibrahim bin Abdul-Rahman bin Awf, from his father, from Abdul-Rahman bin Awf, who related it.His saying, "does not part from my sawad," means "my person." And his saying, "the sooner of us to die," means "the one whose appointed time is nearer."However, in Sahih Bukhari (3962), it is reported from Anas that he said, the Prophet ﷺ said, "Who will go and see what Abu Jahl has done?" So Ibn Masud set off, and found that the two sons of Afraa had struck him until he grew cold. This is a mistake on the part of some of the narrators, for the two who killed Abu Jahl were Muaz bin Amr bin Jamuh and Muaz bin Afraa.This Afraa was his mother, and she was Afraa bint Ubayd bin Thalaba, from Banu Najjar. She embraced Islam and gave the pledge, and she had seven children, all of whom were present at Badr. She bore Muaz and Muawwidh to him, then he divorced her, so Bukayr bin Abdyalil married her, and she bore him Khalid, Iyas, Aqil, and Amir, then Harith took her back, and she bore him Awf. All of them were present at Badr.So it seems that some narrators confused Muaz bin Amr bin Jamuh with Muaz bin Afraa and with Muawwidh bin Afraa, when the mention of "Amr," the father of Muaz, was left out.See Al-Mufhim (3/550).