Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tirmidhi:772 – Qutaybah > ʿAbd al-ʿAzīz b. Muḥammad > ʿAmr b. Yaḥyá from his father > Abū Saʿīd al-Khudrī

"The Messenger of Allah prohibited two fasts: Fasting the Day of Adha and the Day of Fitr."  

الترمذي:٧٧٢ – حَدَّثَنَا قُتَيْبَةُ حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ عَنْ عَمْرِو بْنِ يَحْيَى عَنْ أَبِيهِ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ

نَهَى رَسُولُ اللَّهِ ﷺ عَنْ صِيَامَيْنِ يَوْمِ الأَضْحَى وَيَوْمِ الْفِطْرِ قَالَ وَفِي الْبَابِ عَنْ عُمَرَ وَعَلِيٍّ وَعَائِشَةَ وَأَبِي هُرَيْرَةَ وَعُقْبَةَ بْنِ عَامِرٍ وَأَنَسٍ  

قَالَ أَبُو عِيسَى حَدِيثُ أَبِي سَعِيدٍ حَدِيثٌ حَسَنٌ صَحِيحٌ وَالْعَمَلُ عَلَيْهِ عِنْدَ أَهْلِ الْعِلْمِ قَالَ أَبُو عِيسَى وَعَمْرُو بْنُ يَحْيَى هُوَ ابْنُ عُمَارَةَ بْنِ أَبِي الْحَسَنِ الْمَازِنِيُّ الْمَدَنِيُّ وَهُوَ ثِقَةٌ رَوَى عَنْهُ سُفْيَانُ الثَّوْرِيُّ وَشُعْبَةُ وَمَالِكُ بْنُ أَنَسٍ