Hadith No: 1
Ibn al-Athir - Asad al-Ghabah fi Ma'rifat al-Sahabah - Letter 'S'
Chapter on the Letters 'S' and 'Ayn' - 2089: Sa'id ibn Uthman al-Ansari
Volume: (2) - Page Number: (487)
- Sa'id ibn Uthman al-Ansari al-Zurqi, brother of Uqbah, narrated that Muhammad ibn Ishaq reported from Yahya ibn Ibad ibn Abdullah ibn al-Zubair, from his father, from Abdullah ibn al-Zubair, from al-Zubair, who said: "By Allah, I truly heard the words of Mu'tab ibn Qusair, my brother from the clan of Banu Umr ibn Awf, while drowsiness was overcoming me, and I could not hear him except as in a dream, when he said: 'If we had any say in the matter, we would not be killed here.'" Then he recited: {Indeed, those who turned back among you on the day the two armies met, it was Satan who caused them to slip because of some of what they had earned, and Allah had certainly forgiven them. Indeed, Allah is Forgiving and Forbearing} (Al Imran 3:155) "So those whom Satan caused to slip and then Allah forgave are: Uthman ibn Affan, Sa'id ibn Uthman, and Alqamah ibn Uthman."

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Reference: Osad al-Ghabah fi Ma'refah al-Shahabah Book 2

Hadith No: 2
Ibn al-Athir - Asad al-Ghabah fi Ma'rifat al-Sahabah - Letter R
Chapter on the letter Raa with Aleph - 1602: Rafi' ibn al-Mu'alla Abu Sa'id
Volume: (2) - Page Number: (246)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... Ibn Mundhir said: It was revealed about him and his companions: {Indeed, those who turned back among you on the day when the two armies met, it was Satan who caused them to stumble with some of what they had earned, and Allah had certainly forgiven them. Indeed, Allah is Forgiving and Forbearing (Al-Imran 3:155)} He narrated with his chain from Abu Salih from Ibn Abbas who said: This was revealed concerning Uthman, and Abu Hudhayfah ibn Utbah, and Rafi' ibn al-Mu'alla al-Ansari, and Khawjah ibn Zayd, who turned back on the day when the two armies met.

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Reference: Osad al-Ghabah fi Ma'refah al-Shahabah Book 2

Hadith No: 3
Ibn al-Athir - Al-Nihayah fi Gharib al-Hadith wa'l-Athar - Letter 'Ayn - Chapter 'Ayn with Ya' - 'Ayn
Volume: (3) - Page Number: (334)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... And in the narration about Uthman, it is mentioned that Abd al-Rahman ibn Awf spoke to him, referring to this: "I did not flee on the day of Aynayn." Uthman replied to him, "Why do you reproach me with a sin that Allah has forgiven?" Aynan: The name of a mountain near Uhud, and it is also said that the day of Uhud is the day of Aynayn, and it is the mountain that the archers stood on that day.

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Reference: Al Nihaayaa fi gareeb al hadis wal asar Book 3