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- That the slain person be someone other than the killer’s own descendant. Hence a father—however far up the line—or a mother—however far up—is not put to death for killing his or her child or grandchild, no matter how distant the degree of descent. The right to demand qiṣāṣ passes to the heirs in proportion to their respective shares of inheritance; therefore, if the killer himself, or any of his offspring, would receive even a fraction of that right, no retaliatory execution is carried out.
الرابع: أن يكون المقتول ليس بولد للقاتل فلا يقتل الأب وإن علا ولا الأم وإن علت بالولد ولا ولد الولد وإن سفل ويورث القصاص على قدر الميراث فمتى ورث القاتل أو ولده شيئا من القصاص فلا قصاص.