Dīkṣā-bhedaḥ (Types of Initiation) — Lalitopākhyāna: Hayagrīva–Agastya Dialogue
सद्भक्तरक्षणायैव निराकारो ऽपि साकृतिः / शिवः कृपानिधिर्लोके संसारीव हि चेष्टते // ब्न्द्प्३,४३।६९ / अत्रिनेत्रः शिवः साक्षादचतुर्बाहुरच्युतः / अचतुर्वदनो ब्रह्मा श्रीगुरुः परिकीर्तितः
sadbhaktarakṣaṇāyaiva nirākāro 'pi sākṛtiḥ / śivaḥ kṛpānidhirloke saṃsārīva hi ceṣṭate // BndP_3,43.69 / atrinetraḥ śivaḥ sākṣādacaturbāhuracyutaḥ / acaturvadano brahmā śrīguruḥ parikīrtitaḥ
To protect true devotees, though formless, Śiva assumes a form; Śiva, a treasury of compassion, moves in this world as though a being bound to saṃsāra. The three-eyed one is Śiva; Acyuta is not four-armed; Brahmā is not four-faced—thus is the venerable Śrī Guru proclaimed.