A more thorough explanation:

DE SA VIE

De sa vie is a Law French term that means "of one's own life." It is used to distinguish from pur autre vie, which means "for another's life."

• He sold the property de sa vie, meaning that he sold it for his own lifetime and not for someone else's.
• The insurance policy was written pur autre vie, meaning that it was written for the life of someone else.

The examples illustrate the difference between de sa vie and pur autre vie. In the first example, the property was sold for the owner's lifetime, while in the second example, the insurance policy was written for the life of someone else. This distinction is important in legal contexts, where it is necessary to specify whose life is being referred to.