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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:1569 – Muḥammad b. ʿAbd al-Aʿlá > al-Muʿtamir > Maʿmar > Yaḥyá > Abū Salamah > Um Salamah

"They are two Rak'ahs that I used to pray after Zuhr, but I got distracted and forgot them until I prayed 'Asr." (Using translation from Nasāʾī 579)  

الكبرى للنسائي:١٥٦٩ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الْأَعْلَى عَنِ الْمُعْتَمِرِ قَالَ سَمِعْتُ مَعْمَرًا عَنْ يَحْيَى عَنْ أَبِي سَلَمَةَ عَنْ أُمِّ سَلَمَةَ

أَنَّ النَّبِيَّ ﷺ «صَلَّى فِي بَيْتِهَا بَعْدَ الْعَصْرِ رَكْعَتَيْنِ مَرَّةً وَاحِدَةً» وَأَنَّهَا ذَكَرَتْ ذَلِكَ لَهُ فَقَالَ «هُمَا رَكْعَتَانِ كُنْتُ أُصَلِّيهِمَا بَعْدَ الظُّهْرِ فَشُغِلْتُ عَنْهُمَا حَتَّى صَلَّيْتُ الْعَصْرَ»  

See similar narrations below:

Collected by Nasāʾī
nasai:579 – Muḥammad b. ʿAbd al-Aʿlá > al-Muʿtamir > Maʿmar > Yaḥyá b. Abū Kathīr > Abū Salamah b. ʿAbd al-Raḥman > Um Salamah

"They are two Rak'ahs that I used to pray after Zuhr, but I got distracted and forgot them until I prayed 'Asr."  

النسائي:٥٧٩ – أَخْبَرَنِي مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى قَالَ حَدَّثَنَا الْمُعْتَمِرُ قَالَ سَمِعْتُ مَعْمَرًا عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ عَنْ أُمِّ سَلَمَةَ

أَنَّ النَّبِيَّ ﷺ صَلَّى فِي بَيْتِهَا بَعْدَ الْعَصْرِ رَكْعَتَيْنِ مَرَّةً وَاحِدَةً وَأَنَّهَا ذَكَرَتْ ذَلِكَ لَهُ فَقَالَ هُمَا رَكْعَتَانِ كُنْتُ أُصَلِّيهِمَا بَعْدَ الظُّهْرِ فَشُغِلْتُ عَنْهُمَا حَتَّى صَلَّيْتُ الْعَصْرَ