Hadith #347
English (English)(In worldly matters) Look at those who are below you, and do not look at those who are above you, for this will hold you back from disparaging the favors Allah bestowed upon you.
Reference: صحيح مسلم، كتاب الزهد والرقائق، باب الدنيا سجن المؤمن وجنة الكافر، الحدیث 2963