A more thorough explanation:

OBIIT SINE PROLE

Obiit sine prole is a Latin phrase that means "he died without issue." It is often used in legal documents to indicate that a person died without any children or descendants who could inherit their property or assets.

• John Smith, born in 1920, died in 1995. He was survived by his wife, but obiit sine prole.
• The will of Mary Johnson, who obiit sine prole, left her estate to her favorite charity.

In the first example, John Smith died without any children or descendants who could inherit his property. In the second example, Mary Johnson's will specified that her estate should go to a charity because she had no heirs.