According to Islamic Legislation, as there isn't a idea of Will for much more than one/3 of the property, the property on the deceased couldn't be bequeathed or transferred to one legal heir with no consent of other legal heirs. The legal system in Karachi follows Islamic ideas, as well https://devinvfgok.answerblogs.com/31528141/considerations-to-know-about-lawyer-in-dha-karachi