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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad:546 – ʿAbdullāh > ʿUbaydullāh b. Muʿādh > Muʿtamir b.usulaymān from my father from my father

Abu ʿUthman narrated that ’Uthman ؓ was killed in the middle of the days of al-tashreeq.  

أحمد:٥٤٦ – حَدَّثَنَا عَبْدُ اللهِ حَدَّثَنِي عُبَيْدُ اللهِ بْنُ مُعَاذٍ حَدَّثَنَا مُعْتَمِرُ بْنُسُلَيْمَانَ قَالَ قَالَ أَبِي حَدَّثَنَا أَبُو

عُثْمَانَأَنَّ عُثْمَانَ قُتِلَ فِي أَوْسَطِ أَيَّامِ التَّشْرِيقِ  

See similar narrations below:

Collected by Ṭabarānī
tabarani:100 – [Chain 1] Isḥāq b. Ibrāhīm al-Dabarī > ʿAbd al-Razzāq > Ibn al-Taymī [Chain 2] ʿAlī b. ʿAbd al-ʿAzīz > ʿĀrim Abū al-Nuʿmān > Muʿtamir b. Sulaymān from his father > Abū ʿUthmān al-Nahdī

[Machine] Uthman ibn Affan was killed in the midst of the days of the East.  

الطبراني:١٠٠ – حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ الدَّبَرِيُّ عَنْ عَبْدِ الرَّزَّاقِ عَنِ ابْنِ التَّيْمِيِّ ح وَحَدَّثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ ثنا عَارِمٌ أَبُو النُّعْمَانَ ثنا مُعْتَمِرُ بْنُ سُلَيْمَانَ عَنْ أَبِيهِ عَنْ أَبِي عُثْمَانَ النَّهْدِيِّ قَالَ

«قُتِلَ عُثْمَانُ بْنُ عَفَّانَ ؓ فِي أَوْسَطِ أَيَّامِ التَّشْرِيقِ»