Sunan an-Nasa'i 2426
سنن النسائي#2426Hasanأَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنَا رَجُلاَنِ، مُحَمَّدٌ وَحَكِيمٌ عَنْ مُوسَى بْنِ طَلْحَةَ، عَنِ ابْنِ الْحَوْتَكِيَّةِ، عَنْ أَبِي ذَرٍّ، أَنَّ النَّبِيَّ صلى الله عليه وسلم أَمَرَ رَجُلاً بِصِيَامِ ثَلاَثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ .
It was narrated from Abu Dharr:That the Prophet commanded a man to fast on the thirteenth, fourteenth and fifteenth
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahHasan Lighairihi
Al-AlbaniHasan
Zubair Ali ZaiHasan
In-book reference: 22:337