Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 3
श्रीबादरायणिरुवाचवृत: पुरोहितस्त्वाष्ट्रो महेन्द्रायानुपृच्छते ।नारायणाख्यं वर्माह तदिहैकमना: शृणु ॥ ३ ॥
śrī-bādarāyaṇir uvācavṛtaḥ purohitas tvāṣṭromahendrāyānupṛcchatenārāyaṇākhyaṁ varmāhatad ihaika-manāḥ śṛṇu
Śrī Śukadeva Gosvāmī said: King Indra, the leader of the demigods, inquired about the armor known as Nārāyaṇa-kavaca from Viśvarūpa, who was engaged by the demigods as their priest. Please hear Viśvarūpa’s reply with great attention.