Sunan Ibn Majah 1721
سنن ابن ماجه#1721SahihIt was narrated from Abu Sa’eed that:The Messenger of Allah (ﷺ) forbade fasting on the Day of Fitr and the Day of Adha
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Bukhari And Muslim
In-book reference: 7:84