Those who swallow usury, will rise like one whom the devil has driven to madness by (his) touch, (would) rise. That is because they say, “”Trade is just like usury,”” but Allah has made trade lawful and prohibited usury. So he to whom the admonition has come from his Fosterer, if he desists, then for him is what has already passed and his affair is with Allah; but one returns (to it) then those are the inhabitants of the fire, they will stay in it.
“Those who swallow Riba (usury) compare it with trade to justify their practice but Allah (SWT) helps us in defining it by considering it opposite of charity 2:276. Riba or usury is the excess money taken on loans for allowing the debtor time for repayment. Riba (or usury) thus involves flow of money from the poor to the rich which is against the instruction given in the Quran that money should flow from the rich to the poor. 59:7. In ‘sadaqa’ or ‘zakat’(i.e.-charity) a rich man gives part of his wealth to the poor to please Allah (SWT) 2:265. Contrary to this, in Riba (i.e. usury) a rich man takes part of the hard-earned money of the poor, earning the displeasure of Allah (SWT) to the extent that He declares a war against those involved in ‘Riba’ Usury is thus strongly prohibited and on the contrary, it is ordered that if the debtor is in difficulty he should be allowed more time for the repayment of his loan and if possible, the loan should be converted to charity 2:278-280. This clearly indicates that through the prohibition of usury exploitation of the poor is prohibited: “Do not be unjust (taking money from the poor) and injustice will not be done to you” 2:279. and “Every soul will be paid back in full that which it had earned and injustice will not be done to him” 2: 281”