And do not approach the property of an orphan

وَلَا تَقْرَبُوا مَالَ الْيَتِيمِ إِلَّا بِالَّتِي هِيَ أَحْسَنُ حَتَّىٰ يَبْلُغَ أَشُدَّهُ وَأَوْفُوا بِالْعَهْدِ إِنَّ الْعَهْدَ كَانَ مَسْئُولً

And do not touch the substance of an orphan, save to improve it, before he comes of age. And be true to every promise – for, verily, [on Judgment Day] you will be called to account for every promise which you have made  17:34