**Abstract**

The principle of *Taslit*, as one of the fundamental jurisprudential maxims, refers to the right of disposal and dominion of a person over their property. However, the important question that arises is whether the scope of this principle can be extended to include a person’s dominion over the self or their own body. That is, can the principle of *Taslit* serve as a basis for legitimizing bodily acts such as organ donation, suicide, or other forms of disposal by an individual over their body? In this research, by examining juristic views and jurisprudential evidence, as well as by critiquing arguments such as analogical reasoning of priority, the practice of rational people, and transmitted proofs, it becomes clear that the principle of *Taslit* exclusively refers to property and does not provide sufficient grounds to establish a person’s dominion over the self. Ultimately, the conclusion is reached that although others are not permitted to interfere with a person’s life and body without permission, this does not amount to full sovereignty of the individual over the self. On this basis, it is necessary that contemporary jurisprudential issues related to life and the body, including organ donation, be studied with independent arguments and their own specific principles, and they cannot be addressed merely through an extension of the principle of *Taslit*.