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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:2797 – Maḥmūd b. Khālid > al-Walīd > Abū ʿAmr > Yaḥyá > a freed slave of Liʾusāmah b. Zayd

[Machine] "The Messenger of Allah ﷺ used to fast both of them in this way."  

الكبرى للنسائي:٢٧٩٧ – أَخْبَرَنِي مَحْمُودُ بْنُ خَالِدٍ قَالَ حَدَّثَنَا الْوَلِيدُ عَنْ أَبِي عَمْرٍو عَنْ يَحْيَى عَنْ مَوْلًى لِأُسَامَةَ بْنِ زَيْدٍ أَنَّ أُسَامَةَ بْنَ زَيْدٍ كَانَ يَصُومُ الِاثْنَيْنِ وَالْخَمِيسَ وَيُخْبِرُ

«أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَصُومُهُمَا كَذَلِكَ»