Hadith Nawawiyy No. 12
From the route of Abu Hurayrah, may Allah accept his deeds, who said: the Messenger of Allah, sallallahu ^alayhi wa sallam, said: <<A way for the person to excel in Islam is not to interfere in the matters which do not concern one.>> This is a Hasan Hadith, narrated by at-Tirmidhiyy and others with the same terminology.