Is it true that a person who sees Rasulullah (Sallallahu alayhi wasallam) in a dream is guaranteed to die with Imaan?

Answer

While the person is fortunate for making ziyaarat in his dream of Rasulullah (Sallallahu alayhi wasallam), there is no categorical teaching of the Shariah that guarantees that he will die with Imaan. There were persons who had made ziyaarat of Rasulullah (Sallallahu alayhi wasallam) whilst he was alive, but then still became murtadd. May Allah Ta'ala save us.