صحيح البخاري Sahih Bukhari كتاب الرقاق The Book of Ar-Riqaq (Softening of The Hearts)
بَابُ لِيَنْظُرْ إِلَى مَنْ هُوَ أَسْفَلَ مِنْهُ وَلاَ يَنْظُرْ إِلَى مَنْ هُوَ فَوْقَهُ:

(30) Chapter. One should always look at the one who is inferior (in worldly rank) to him, and should not look at the one who is superior (in worldly rank) to him.

1 hadith
Hadith 6490
حَدَّثَنَا إِسْمَاعِيلُ ، قَالَ : حَدَّثَنِي مَالِكٌ ، عَنْ أَبِي الزِّنَادِ ، عَنِ الْأَعْرَجِ ، عَنْ أَبِي هُرَيْرَةَ ، عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ : " إِذَا نَظَرَ أَحَدُكُمْ إِلَى مَنْ فُضِّلَ عَلَيْهِ فِي الْمَالِ وَالْخَلْقِ ، فَلْيَنْظُرْ إِلَى مَنْ هُوَ أَسْفَلَ مِنْهُ " .
Narrated Abu Huraira: Allah's Apostle 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.
Hadith Reference Sahih Bukhari / The Book of Ar-Riqaq (Softening of The Hearts) / Hadith: 6490
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة