Jami` at-Tirmidhi 2317
جامع الترمذي#2317Da'ifAbu Hurairah narrated that the Messenger of Allah (s.a.w) said:"Indeed among the excellence of a person's Islam is that he leaves what does not concern him
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
Zubair Ali ZaiDaif
In-book reference: 36:14