ललितोपाख्याने जप-न्यास-योगप्रकरणम्
Lalitopākhyāna: Procedure of Japa, Nyāsa, and Yogic Installation
त्रिखण्डामनुबध्नीयाद्गुर्वादीनभिवन्द्य च / द्विरुक्तबालबीजानि मध्याद्यङ्गुलिषु क्रमात्
trikhaṇḍāmanubadhnīyādgurvādīnabhivandya ca / dviruktabālabījāni madhyādyaṅguliṣu kramāt
Then he bound the trikhaṇḍā, and after bowing to the Guru and the revered elders, he placed in sequence upon the fingers—beginning with the middle finger—the bāla-bīja, each uttered twice.