From Sahih Muslim (Hadith 7430):
Abu Huraira reported Allah's Messenger (ﷺ) as saying:Look at those who stand at a lower level than you but don't look at those who stand at a higher level than you, for that is better-suited that you do not disparage Allah's favors. In the chain narrated by Abu Mu'awiya's he said: Upon you
Reference: Muslim 7430