The Quran 06:152 (Surah al-An’am)
And do not approach the orphan’s property except in a way that is best until he reaches maturity. And give full measure and weight in justice. We do not charge any soul except (with that within) its capacity. And when you testify, be just, even if (it concerns) a near relative. And the Covenant of Allah fulfill. This has He instructed you that you may remember.