The Bee - 16:71
Allah has made you superior to one another in sustenance. Indeed, those who are made superior do not share their wealth equally with those under them. Do they reject the Blessing of Allah?
What makes people superior to one another?
The Cattle/6:165
He has made you inheritors of the earth, and He has made some of you superior to others in degrees, that He may try you with what He has given you. Your Lord is the quick-finishing. Forgiving, Merciful.
The Bee/16:76
Allah also gives the example of two men: One of them has no ability to do anything and is totally dependent on his master/owner, and whatever he puts him to work, he cannot accomplish anything. Can such a person be equal to the one who is on the right path and applies justice?
The Night Journey/17:21
Notice how We have made people superior to one another. Greater are the degrees and superiorities of the Hereafter
The Romans/30:28
He gives you an example from among yourselves: Do you accept those under your command as equal partners with you in what We have provided you? Do you fear them as you fear each other? Thus do We explain the verses in detail for a people who use their reason.
The Ornaments of Gold/43:32
Do they divide the mercy of your Lord? We divided between them their livelihood in the life of this world, and We made them superior to one another in rank, so that they might cause one another to work. And the mercy of your Lord is better than what they have accumulated.