Siva is the Source of all the Scriptures

Siva is source of all literature (ola leaves, temple carvings, stone edicts, etc)

Image of Satguru Sivaya Subramuniyaswami
Through pranayama, through mantra, through tantra, wielding an indomitable will, the last forces of form, time and space subside, as the yogi, deep in nirvikalpa samadhi, merges into Parasiva.
—Gurudeva