Al-An'am 6:152 ولا تقربوا مال اليتيم الا بالتي هي احسن حتى يبلغ اشده واوفوا الكيل والميزان بالقسط لا نكلف نفسا الا وسعها واذا قلتم فاعدلوا ولو كان ذا قربى وبعهد الله اوفوا ذالكم وصاكم به لعلكم تذكرون ١٥٢

"And come not near to the orphan’s property, except to improve it, until he (or she) attains the age of full strength; and give full measure and full weight with justice. We burden not any person, but that which he can bear. And whenever you give your word (i.e. judge between men or give evidence), say the truth even if a near relative is concerned, and fulfil the Covenant of Allâh. This He commands you, that you may remember¹.