Sahih Muslim 2676
صحيح مسلم#2676Sahihوَحَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا سَعْدُ بْنُ سَعِيدٍ، أَخْبَرَتْنِي عَمْرَةُ، عَنْ عَائِشَةَ، - رضى الله عنها - قَالَتْ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ صَوْمَيْنِ يَوْمِ الْفِطْرِ وَيَوْمِ الأَضْحَى .
A'isha (Allah be pleased with her) said that the Prophet (ﷺ) forbade to observe fast on two days-the day of Fitr and the day of Adha
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 13:182