The Sivagītā is a text of vedantic Saivism abstracted from Uttarakanda of padmapurana, in this Gita , the teacher is Lord siva, the disciple is Sri rama and narrator is Seeta. The story starts from the kidnap of Seeta and ends with getting pasupatastra.
A dialogue between Siva and Pārvati and siva explained to Pārvati the greatness of Panājsaramantra ' Om Namah Sivaya' at the time of Pralaya,Creation, etc.