Dīkṣā-bhedaḥ (Types of Initiation) — Lalitopākhyāna: Hayagrīva–Agastya Dialogue
गुरुश्च तादृशोभूत्वा पूजामन्दिरमाविशेत् / देवीसूक्तेन संयुक्तं विद्यान्यासं समातृकम्
guruśca tādṛśobhūtvā pūjāmandiramāviśet / devīsūktena saṃyuktaṃ vidyānyāsaṃ samātṛkam
The Guru too, being thus prepared, should enter the hall of worship; then he performs the placement of sacred knowledge-mantras (vidyā-nyāsa), joined with the Devī-sūkta and accompanied by the mātṛkās.