Śrīmad-Bhāgavatam (Bhāgavata Purāṇa) / Canto 6: Prescribed Duties for Mankind / CHAPTER EIGHT / After explaining this process, Śukadeva Gosvāmī told Mahārāja Parīkṣit how Viśvarūpa, the brother of Vṛtrāsura, described the glories of the Nārāyaṇa-kavaca to Indra.