Jami` at-Tirmidhi 773
جامع الترمذي#773SahihUqbah bin Amir narrated that :The Messenger of Allah said: "The Day of Arafah, the Day of Nahr, and the Days of Tashriq are Eid for us. The people of Islam, and they are days of eating and drinking
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 8:92