Hadith: Look at those who stand at a lower level than you

Narrated Abu Huraira Radiallahu anhu: Allah's Apostle Sallallahu Alaihi Wasallam said, If anyone of you looked at a person who was made superior to him in property and (in good) appearance, then he should also look at the one who is inferior to him, and to whom he has been made superior. 

{Sahih Bukhari, Vol 8, Book 76, No. 497} 

Abu Huraira Radi Allahu Anhu reported Allah's Messenger (may peace be upon him) 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 this would make the favours (conferred upon you by Allah) insignificant (in your eyes). 

{Sahih Muslim, Book 042, Number 7070}