Dīkṣā-bhedaḥ (Types of Initiation) — Lalitopākhyāna: Hayagrīva–Agastya Dialogue
षोडशर्णमनुं तस्य वदेद्वामश्रुतौ शनैः / ततो बहिर्विनिर्गत्य स्थाप्य दार्वासने शुचिम्
ṣoḍaśarṇamanuṃ tasya vadedvāmaśrutau śanaiḥ / tato bahirvinirgatya sthāpya dārvāsane śucim
Let him softly speak her sixteen-syllabled mantra into the left ear; then, going outside, let him seat the purified disciple upon a wooden āsana.