The "Great Brightness Mantra", also called "Great Initiation Light of Infallible Lasso Vairocana Buddha Dharani", originated from the Amoghapāśakalparāja-sūtra (Chinese translation Taisho ed. no. 1092) or Sutra of the Mantra of the Unfailing Rope Snare of the Buddha Vairocana's Great Baptism