Surah An-Nisa Verse 2 - English Translation by Ali Unal
Surah An-Nisaوَءَاتُواْ ٱلۡيَتَٰمَىٰٓ أَمۡوَٰلَهُمۡۖ وَلَا تَتَبَدَّلُواْ ٱلۡخَبِيثَ بِٱلطَّيِّبِۖ وَلَا تَأۡكُلُوٓاْ أَمۡوَٰلَهُمۡ إِلَىٰٓ أَمۡوَٰلِكُمۡۚ إِنَّهُۥ كَانَ حُوبٗا كَبِيرٗا
Restore their property to the orphans (in your custody, when they come of age), and do not exchange the corrupt for the good (the unlawful for the lawful), nor consume their property by mixing it up with your own. For doing that would be a great crime (whereby you risk the spiritual reward you hope for by caring for them)