﴿ تِلْكَ حُدُودُ ٱللَّهِ ۚ وَمَن يُطِعِ ٱللَّهَ وَرَسُولَهُۥ يُدْخِلْهُ جَنَّٰتٍۢ تَجْرِى مِن تَحْتِهَا ٱلْأَنْهَٰرُ خَٰلِدِينَ فِيهَا ۚ وَذَٰلِكَ ٱلْفَوْزُ ٱلْعَظِيمُ ﴾

“These are the bounds set by God. And whoever pays heed unto God and His Apostle, him will He bring into gardens through which running waters flow, therein to abide: and this is a triumph supreme.”

Payment of the dues of orphans, abiding by wills, release of the inheritance to the inheritors, etc., are among those matters on which a man’s being sent to hell or heaven depends. To make out a will disposing of one-third part of one’s property is permissible by Islamic law. But anyone making out a will with the intention of depriving a person of his rightful inheritance, would be committing a sin that could condemn him to Hell. Man has to follow the law of God in this regard and not his own personal desires or family expediencies.