If someone is ready to lend his existing standardised...
If someone is ready to lend his existing standardised certificate of debts - called money - to another person, this other person has to give back the lend money one defined day. But in addition to this lend money, he has to give back an additional money, which is called interest or "Riba" as Islamic term. As we know, interest is forbidden in Islam.
To prove how wrong and defect the system of "Riba" is, on can assume, what would happen, if someone living in the time of , more than 1400 years ago, and had invested only one single Tuman with 5% interest. The result would be that his today progeny would posses nearly 5 Quadrilliarde (4,62401 x 1029) Tuman. This is a 5 with 29 zeros behind! And you can imagine that this is much more than today's existing money in Iran.
This corrupt system of "Riba" can only exist for some decades and needs afterwards a world war to start again by zero. Today we live in the era of such a crash. But this era gives us a good chance to understand, why the Salawat-System could work even without miracles. Therefore we need a short view into the recent existing government debts. Government debts Germany today has about 1500 milliard (American: billion) EUR debts.
The leader of the Western World USA today has about 8500 milliard (American: billion) EUR debts, and Japan 7000 milliard (American: billion) EUR. If we add only the debts of these three countries (Germany, USA, Japan), the result is 17 billion (American: trillion) EUR, it is a 17 with 12 zeros behind. This money - or let us remember: standardised certificates of debts - has been given by someone, who does not need it today and who lives from the interest [riba].
We can say that this world even today has debts of much more than 17 billion EUR (American: trillion), which nobody needs actually. If we would have a look into the situation of much more countries the result would be enormous; let us assume around 35 billion EUR.
If we divide this debts to the existing world population of 7 milliard (American: billion) every single person in this world, every child, every old, every woman and man, every one of you would have a starting capital of 5000 EUR which is the annual salary for the majority of world population. A family with 5 person could get 25.000 EUR.
This short calculation was only to show, how the already existing money or debts in this world could lead to a moderate richness of recent mankind if distributed justly.