ललितोपाख्याने जप-न्यास-योगप्रकरणम्
Lalitopākhyāna: Procedure of Japa, Nyāsa, and Yogic Installation
त्रिखण्डा सर्वबीजा च मूद्रा सर्वप्रपीरिका / योनिमुद्रेति विज्ञेयास्तत्र चक्रेश्वरीं न्यसेत्
trikhaṇḍā sarvabījā ca mūdrā sarvaprapīrikā / yonimudreti vijñeyāstatra cakreśvarīṃ nyaset
Know this as the “Yoni Mudrā”: threefold, the seed of all seeds, the mudrā that brings all to fullness; there, within that cakra, one should place Cakreśvarī, the Lady of the Wheel.