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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
bukhari:592 – Mūsá b. Ismāʿīl > ʿAbd al-Wāḥid > al-Shaybānī > ʿAbd al-Raḥman b. al-Aswad from his father > ʿĀʾishah

Messenger of Allah ﷺ never missed two rakʿat before the Fajr prayer and after the ʿAsr prayer openly and secretly.  

البخاري:٥٩٢ – حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ قَالَ حَدَّثَنَا عَبْدُ الْوَاحِدِ قَالَ حَدَّثَنَا الشَّيْبَانِيُّ قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ الأَسْوَدِ عَنْ أَبِيهِ عَنْ عَائِشَةَ قَالَتْ

رَكْعَتَانِ لَمْ يَكُنْ رَسُولُ اللَّهِ ﷺ يَدَعُهُمَا سِرًّا وَلاَ عَلاَنِيَةً رَكْعَتَانِ قَبْلَ صَلاَةِ الصُّبْحِ وَرَكْعَتَانِ بَعْدَ الْعَصْرِ  

See similar narrations below:

Collected by Muslim, Nasāʾī, Aḥmad, Nasāʾī's Kubrá
muslim:835c – [Chain 1] Abū Bakr b. Abū Shaybah > ʿAlī b. Mushir [Chain 2] ʿAlī b. Ḥujr > ʿAlī b. Mushir > Abū Isḥāq al-Shaybānī > ʿAbd al-Raḥman b. al-Aswad from his father > ʿĀʾishah

Two are the prayers which the Messenger of Allah ﷺ always observed in my house-openly or secretly-two rak'ahs before the dawn and two rak'ahs after the 'Asr.  

مسلم:٨٣٥c – وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ ح وَحَدَّثَنَا عَلِيُّ بْنُ حُجْرٍ وَاللَّفْظُ لَهُ أَخْبَرَنَا عَلِيُّ بْنُ مُسْهِرٍ أَخْبَرَنَا أَبُو إِسْحَاقَ الشَّيْبَانِيُّ عَنْ عَبْدِ الرَّحْمَنِ بْنِ الأَسْوَدِ عَنْ أَبِيهِ عَنْ عَائِشَةَ قَالَتْ

صَلاَتَانِ مَا تَرَكَهُمَا رَسُولُ اللَّهِ ﷺ فِي بَيْتِي قَطُّ سِرًّا وَلاَ عَلاَنِيَةً رَكْعَتَيْنِ قَبْلَ الْفَجْرِ وَرَكْعَتَيْنِ بَعْدَ الْعَصْرِ  

nasai:577 – ʿAlī b. Ḥujr > ʿAlī b. Mushir > Abū Isḥāq > ʿAbd al-Raḥman b. al-Aswad from his father > ʿĀʾishah

"There are two prayers that the Messenger of Allah ﷺ never neglected to pray them in my house secretly nor publicly: Two Rak'ahs before Fajr and two Rak'ahs after 'Asr."  

النسائي:٥٧٧ – أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ قَالَ أَنْبَأَنَا عَلِيُّ بْنُ مُسْهِرٍ عَنْ أَبِي إِسْحَاقَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ الأَسْوَدِ عَنْ أَبِيهِ عَنْ عَائِشَةَ قَالَتْ

صَلاَتَانِ مَا تَرَكَهُمَا رَسُولُ اللَّهِ ﷺ فِي بَيْتِي سِرًّا وَلاَ عَلاَنِيَةً رَكْعَتَانِ قَبْلَ الْفَجْرِ وَرَكْعَتَانِ بَعْدَ الْعَصْرِ  

ahmad:25262 – Hishām b. Saʿīd > Khālid > al-Shaybānī > ʿAbd al-Raḥman b. al-Aswad from his father > ʿĀʾishah

"There are two prayers that the Messenger of Allah ﷺ never neglected to pray them in my house secretly nor publicly: Two Rak'ahs before Fajr and two Rak'ahs after 'Asr." (Using translation from Nasāʾī 577)   

أحمد:٢٥٢٦٢ – حَدَّثَنَا هِشَامُ بْنُ سَعِيدٍ حَدَّثَنَا خَالِدٌ عَنِ الشَّيْبَانِيِّ عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْأَسْوَدِ عَنْ أَبِيهِ عَنْ عَائِشَةَ قَالَتْ

صَلَاتَانِ لَمْ يَتْرُكْهُمَا النَّبِيُّ ﷺ سِرًّا وَلَاعَلَانِيَةً رَكْعَتَيْنِ بَعْدَ الْعَصْرِ وَرَكْعَتَيْنِ قَبْلَ الْفَجْرِ  

nasai-kubra:372 – ʿAlī b. Ḥujr > ʿAlī / Ibn Mushir > Abū Isḥāq > ʿAbd al-Raḥman b. al-Aswad from his father > ʿĀʾishah

Two are the prayers which the Messenger of Allah ﷺ always observed in my house-openly or secretly-two rak'ahs before the dawn and two rak'ahs after the 'Asr. (Using translation from Muslim 835c)  

الكبرى للنسائي:٣٧٢ – أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ قَالَ حَدَّثَنَا عَلِيٌّ وَهُوَ ابْنُ مُسْهِرٍ عَنْ أَبِي إِسْحَاقَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْأَسْوَدِ عَنْ أَبِيهِ عَنْ عَائِشَةَ قَالَتْ

«صَلَاتَانِ مَا تَرَكَهُمَا رَسُولُ اللهِ ﷺ فِي بَيْتِي سِرًّا وَلَا عَلَانِيَةً رَكْعَتَانِ قَبْلَ الْفَجْرِ وَرَكْعَتَانِ بَعْدَ الْعَصْرِ»