وَعَنْ أَبِي سَعِيدٍ اَلْخُدْرِيِّ رضى الله عنه
«أَنَّ رَسُولَ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ نَهَى عَنْ صِيَامِ يَوْمَيْنِ: يَوْمِ اَلْفِطْرِ وَيَوْمِ اَلنَّحْرِ»
Abu Said al-Khudri (RAA) narrated. ‘The Messenger of Allah (sallallahu alayhi wa sallam) has prohibited fasting on two days; the day of Fitr (breaking the fast of Ramadan) and on the day of sacrifice (‘Idul Adha).’ Agreed upon.’
Bulugh al-Maram 794, Book 5, Fasting, Hadith 37. 1 min read