وَآتُوا الْيَتَامَىٰ أَمْوَالَهُمْ ۖ وَلَا تَتَبَدَّلُوا الْخَبِيثَ بِالطَّيِّبِ ۖ وَلَا تَأْكُلُوا أَمْوَالَهُمْ إِلَىٰ أَمْوَالِكُمْ ۚ إِنَّهُ كَانَ حُوبًا كَبِيرًا 2
To orphans restore their property (When they reach their age), nor substitute (your) worthless things for (their) good ones; and devour not their substance (by mixing it up) with your own. For this is indeed a great sin.