The practice of awakening through (intense) pain :
kiṃcid aṅgaṃ vibhidyādau tīkṣṇasūcyādinā tataḥ |
tatraiva cetanāṃ yuktvā bhairave nirmalā gatiḥ || 93 ||
"First pierce any part of the body
with a sharp needle, for instance.
Then fix your awareness right there :
immaculate insight of the divine (will happen)."