The Book of Fasting
13/22. Chapter:
The prohibition of fasting on the two days of 'Id
Sahih Muslim
وَحَدَّثَنَا 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.
Reference : Sahih Muslim 1140In-book reference : Book 13, Hadith 182USC-MSA web (English) reference : Book 6, Hadith 2538