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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
nasai-kubra:2886 – ʿAmr b. Yazīd > ʿAbd al-Raḥman > Sufyān > al-Aʿmash > Ibrāhīm > al-Aswad > ʿĀʾishah

The Apostle of Allah ﷺ did not observe fast in the ten days of Dhul-Hijja. (Using translation from Muslim 1176b)   

الكبرى للنسائي:٢٨٨٦ – أَخْبَرَنَا عَمْرُو بْنُ يَزِيدَ قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ عَنْ سُفْيَانَ عَنِ الْأَعْمَشِ عَنْ إِبْرَاهِيمَ عَنِ الْأَسْوَدِ عَنْ عَائِشَةَ

أَنَّ النَّبِيَّ ﷺ «لَمْ يَصُمِ الْعَشْرَ قَطُّ»  

See similar narrations below:

Collected by Bukhārī, Muslim
bukhari:2000 – Abū ʿĀṣim > ʿUmar b. Muḥammad > Sālim from his father

The Prophet ﷺ said, "Whoever wishes may fast on the day of 'Ashura'."  

البخاري:٢٠٠٠ – حَدَّثَنَا أَبُو عَاصِمٍ عَنْ عُمَرَ بْنِ مُحَمَّدٍ عَنْ سَالِمٍ عَنْ أَبِيهِ ؓ قَالَ

قَالَ النَّبِيُّ ﷺ يَوْمَ عَاشُورَاءَ إِنْ شَاءَ صَامَ  

muslim:1176b – Abū Bakr b. Nāfiʿ al-ʿAbdī > ʿAbd al-Raḥman > Sufyān > al-Aʿmash > Ibrāhīm > al-Aswad > ʿĀʾishah

The Apostle of Allah ﷺ did not observe fast in the ten days of Dhul-Hijja.  

مسلم:١١٧٦b – وَحَدَّثَنِي أَبُو بَكْرِ بْنُ نَافِعٍ الْعَبْدِيُّ حَدَّثَنَا عَبْدُ الرَّحْمَنِ حَدَّثَنَا سُفْيَانُ عَنِ الأَعْمَشِ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ عَنْ عَائِشَةَ ؓ

أَنَّ النَّبِيَّ ﷺ لَمْ يَصُمِ الْعَشْرَ