| The inhabitants of those islands are also divided into four castes — Ṛtavrata, Satyavrata, Dānavrata and Anuvrata — which exactly resemble brāhmaṇa, kṣatriya, vaiśya and śūdra. They practice prāṇāyāma and mystic yoga, and in trance they worship the Supreme Lord in the form of Vāyu.
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