Rudra-prasava-varṇana
The Manifestation and Naming of Rudra / Nīlalohita
सप्तमं यन्मया प्रोक्तं नामोग्रेति तव प्रभो / तस्य नाम्नस्तनुस्तुभ्यं द्विजो भवति दीक्षितः
saptamaṃ yanmayā proktaṃ nāmogreti tava prabho / tasya nāmnastanustubhyaṃ dvijo bhavati dīkṣitaḥ
O Lord, the seventh Name I have declared is “Ogra”; through the body of that Name, the twice-born who has received dīkṣā becomes consecrated unto You.