﴿ وَءَاتُوا۟ ٱلْيَتَٰمَىٰٓ أَمْوَٰلَهُمْ ۖ وَلَا تَتَبَدَّلُوا۟ ٱلْخَبِيثَ بِٱلطَّيِّبِ ۖ وَلَا تَأْكُلُوٓا۟ أَمْوَٰلَهُمْ إِلَىٰٓ أَمْوَٰلِكُمْ ۚ إِنَّهُۥ كَانَ حُوبًۭا كَبِيرًۭا ﴾

“Hence, render unto the orphans their posses­sions, and do not substitute bad things [of your own] for the good things [that belong to them], and do not consume their possessions together with your own: this, verily, is a great crime.”

Please check ayah 4:4 for complete tafsir.