What is Sivatri and the Nature of Nirvikalpa Samadhi
Mahasivaratri: A time of striving to realize Parasiva. In our teachings yoga is the restraint of mental activity (chitta vritti). Nivritti marga-the path of renunciation. Pravritti marga-the path of action or life in worldly society. Ashrama dharma, a mental resting place within the 4 ashramas in life. The day before the new moon, as in monthly Sivaratri, nivritti energy is strong, an excellent time for austerity and meditation. Six Shum words defined related to meditation-withdrawal: kashum, nikashum, shumnikashum, bishumnikashum, abibishumnikashum, haiiaiibishumnikashum. Drawing energy up in to the transcendental Source of energy. Imkaif: Absence of awareness aware of itself. Nonexperience.
Master Course Trilogy, Dancing with Siva, Sloka 97.
Twelve Shum Meditations-Gurudeva's Introduction to the Advaitin.