Seth Shiv Dayal Ji appeared in his disciple "Bukki ji" after his death.

Swami Shiv Dayal ji after his death appeared in one of his disciples “Bukki” and remained in her until she died. Shiv Dayal ji used to accept services and smoke hukkah via Bukki. People used to take orders from Shiv Dayal ji via Bukki ji. Even Rai Salig Ram had taken a few orders from Shiv Dayal ji at the time of need.

This clearly shows that Hazoor Swami Shiv Dayal ji became a ghost. He was an ordinary man who used to smoke hukkah.