Hazrat Shah Waliullah Dehlavi (rahmatullahi alaihe) writes in “Faizul Haramine” about his experiences while he was in Madinah al-Munawara.
Hazrat Shah Waliullah Dehlavi (rahmatullahi alaihe) narrates that while in the holy city of
Hazrat Shah Waliullah Dehlavi (rahmatullahi alaihe) writes that Prophets and Messengers do not die in the literal sense of the word. They are alive in the grave and lead a life similar to the one in this world. They regularly offer prayers in the grave and also perform the Hajj.
Hazrat Shah Waliullah Dehlavi (rahmatullahi alaihe) narrates that whenever he gave his salaam at the blessed Rouza, the Beloved Prophet (sallallahu alaihe wa sallam) would return his salaam and would express satisfaction. Such superior attributes can only be ascribed to the Rahmatullil Aalamin or “Mercy for all the Worlds.”
It is the opinion of the Ahle Sunnat Wal Jamayat that the Beloved Prophet (sallallahu alaihe wa sallam) is alive in his holy grave. Hazrat Maolana Qasem Nanutabi (rahmatullahi alaihe) has written on this subject in his book “Abehayat”.