Jami` at-Tirmidhi 2222
جامع الترمذي#2222SahihImran bin Husain narrated that the Messenger of Allah (ﷺ) said:"The best of my Ummah is the generation among whom I was sent, then those who follow them." He(`Imran) said: I do not know if he mentioned the third or not. "Then there shall appear people who testify while their testimony was not sought, who are treacherous, not trusted, and fatness shall spread among them
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 ZaiSahih Muslim
In-book reference: 33:65