An-Nisa 4:6 وابتلوا اليتامى حتى اذا بلغوا النكاح فان انستم منهم رشدا فادفعوا اليهم اموالهم ولا تاكلوها اسرافا وبدارا ان يكبروا ومن كان غنيا فليستعفف ومن كان فقيرا فلياكل بالمعروف فاذا دفعتم اليهم اموالهم فاشهدوا عليهم وكفى بالله حسيبا ٦

Test the orphans until they reach the age of marriage,¹ and then if you find them mature of mind hand over to them their property,² and do not eat it up by either spending extravagantly or in haste, fearing that they would grow up (and claim it). If the guardian of the orphan is rich let him abstain entirely (from his ward's property); and if he is poor, let him partake of it in a fair measure.³ When you hand over their property to them let there be witnesses on their behalf. Allah is sufficient to take account (of your deeds).