This document discusses the Seal of Prophethood that was on Muhammad (peace be upon him). It says the seal was placed after his chest was split open when he was 4 years old. The seal was located between his shoulder blades on his left side, and was the size of a pigeon egg. It had some hairs and spots like moles. The seal served to authenticate that Muhammad was a prophet and protected him from evil whispers. It disappeared after his death, proving he had passed away.