Under islamic law all legal documents especially wills must be witnessed a person who inherits from a person cannot be a witness to that persons will as it is a conflict of interest it is recommended to follow the laws of your country location when drafting a will so that it will be accepted by the courts after your death. Islamic laws of inheritance by muhammad ahsan zafar dedicated to my teacher eng malik bashir ahmad baghvi whats inside 1 terminologies and abbreviations 2 steps of wealth distribution 3 calculating share of heirs 4 sample cases 5 exceptional cases problem of excess deficiency 6 sources of knowledge for calculations . The prophet pbuh said that the law of inheritance is half of all knowledge the islamic law of inheritance is a mandatory intestacy inheritance system that means the estate of a decedent is distributed according to a prescribed share formula in the quran as the quran states this is an apportionment from god. The particular importance of the islamic laws of inheritance is obvious from the verses immediately following those verses giving specific details on inheritance shares these are limits set by allah or ordainments as regards laws of inheritance and whosoever obeys allah and his messenger will be admitted to gardens under which rivers flow in paradise to abide therein and that will be the great success