Jami` at-Tirmidhi 1955
جامع الترمذي#1955SahihAbu Sa'eed narrated that the Messenger of Allah said :"Whoever is not grateful to the people, he is not grateful to Allah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih Lighairihi
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 27:61