(22) باب النَّهْىِ عَنْ صَوْمِ، 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. (ID)
Reference (ID): Sahih Muslim 1140 (ID)
In-book reference (ID): Book 13, Hadith 182 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 6, Hadith 2538 (ID)