Whatever Allah made His messenger to take from the people of the towns, it is for Allah and for His messenger and for the possessors of relationship and the orphans and the needy and the wayfarer, so that the (wealth) may not become an item of circulation (only) between the rich among you {1}. And take that which the messenger gives you and that which he withholds from you, you (too) withhold (yourselves from it), and fear Allah, Allah is certainly severe in requiting.
The principle of the distribution of wealth is very clearly stated hire, money should flow from the rich to the poor.
Water flows from a higher level to a lower level, electricity from a higher potential to a lower, similarly wealth is a current and it should flow from the rich to the poor. This natural law appears to be emphasised in this verse.