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.
tabarani:10051ʿAbdullāh b. Isḥāq b. Ibrāhīm al-Madāʾinī > Aḥmad b. Bazīʿ al-Khaffāf al-Raqqī > Saʿīd b. Maslamah > Abū Janāb > Ṭalḥah b. Muṣarrif > Ibrāhīm > ʿAlqamah > Ibn Masʿūd

[Machine] The Messenger of Allah ﷺ forbade fasting for three days: the day before Eid al-Tarwiyah, the day of Eid al-Fitr, and the day of Eid al-Adha.  

الطبراني:١٠٠٥١حَدَّثَنَا عَبْدُ اللهِ بْنُ إِسْحَاقَ بْنِ إِبْرَاهِيمَ الْمَدَائِنِيُّ ثنا أَحْمَدُ بْنُ بَزِيعٍ الْخَفَّافُ الرَّقِّيُّ ثنا سَعِيدُ بْنُ مَسْلَمَةَ عَنْ أَبِي جَنَابٍ عَنْ طَلْحَةَ بْنِ مُصَرِّفٍ عَنْ إِبْرَاهِيمَ عَنْ عَلْقَمَةَ عَنِ ابْنِ مَسْعُودٍ

أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنْ صِيَامِ ثَلَاثَةِ أَيَّامٍ تَعْجِيلِ يَوْمٍ قَبْلَ التَّرْوِيَةِ وَالْفِطْرِ وَالْأَضْحَى  


See similar narrations below:

Collected by Ibn Ḥibbān

ذِكْرُ الزَّجْرِ عَنْ صَوْمِ الْيَوْمَيْنِ اللَّذَيْنِ يُعَيَّدُ فِيهِمَا

ibnhibban:3598ʿUmar b. Saʿīd b. Sinān > Aḥmad b. Abū Bakr > Mālik > Muḥammad b. Yaḥyá b. Ḥibbān > al-Aʿraj > Abū Hurayrah

Abu Huraira (Allah be pleased with him) reported that the Messenger of Allah ﷺ forbade fasting on these two days. 'Id-ul-Adha and 'Id-ul-Fitr. (Using translation from Muslim 1138)  

ابن حبّان:٣٥٩٨أَخْبَرَنَا عُمَرُ بْنُ سَعِيدِ بْنِ سِنَانَ قَالَ أَخْبَرَنَا أَحْمَدُ بْنُ أَبِي بَكْرٍ عَنْ مَالِكٍ عَنْ مُحَمَّدِ بْنِ يَحْيَى بْنِ حِبَّانَ عَنِ الْأَعْرَجِ عَنْ أَبِي هُرَيْرَةَ

«أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْ صِيَامِ يَوْمَيْنِ يَوْمِ الْفِطْرِ وَيَوْمِ الْأَضْحَى»