The Cow - 2:278
O you who believe, if you really believe, listen to Allah and abandon all forms of usury.
Related:
The Cow/2:188
Do not eat your money unjustly among yourselves. And do not bribe officials/managers with the intention of taking the people´s money unjustly.
وَلَا تَأْكُلُٓوا اَمْوَالَكُمْ بَيْنَكُمْ بِالْبَاطِلِ وَتُدْلُوا بِهَٓا اِلَى الْحُكَّامِ لِتَأْكُلُوا فَر۪يقاً مِنْ اَمْوَالِ النَّاسِ بِالْاِثْمِ وَاَنْتُمْ تَعْلَمُونَ۟
The Women/4:29
Believers! Do not eat one another´s property by injustice and deceit, even in consensual trade. Do not kill one another. Allah is Most Merciful to you
يَٓا اَيُّهَا الَّذ۪ينَ اٰمَنُوا لَا تَأْكُلُٓوا اَمْوَالَكُمْ بَيْنَكُمْ بِالْبَاطِلِ اِلَّٓا اَنْ تَكُونَ تِجَارَةً عَنْ تَرَاضٍ مِنْكُمْ وَلَا تَقْتُلُٓوا اَنْفُسَكُمْۜ اِنَّ اللّٰهَ كَانَ بِكُمْ رَح۪يماً
The Romans/30:39
The usury money which you give to increase in the wealth of the people does not increase with Allah. But as for the zakat which you give seeking Allah´s Pleasure, those who give it multiply their investment.
وَمَٓا اٰتَيْتُمْ مِنْ رِباً لِيَرْبُوَ۬ا ف۪ٓي اَمْوَالِ النَّاسِ فَلَا يَرْبُوا عِنْدَ اللّٰهِۚ وَمَٓا اٰتَيْتُمْ مِنْ زَكٰوةٍ تُر۪يدُونَ وَجْهَ اللّٰهِ فَاُو۬لٰٓئِكَ هُمُ الْمُضْعِفُونَ